An aquarium water conditioner is, no doubt, a staple in fish tank kits for most seasoned fish keepers. While it is not a popular product like a filter, it is an essential fish tank supply, as long as you are using tap water in your aquariums.
The primary purpose of this tank supply is to make your aquarium a safe haven for your fish by removing the chloramine and chlorine contents from tap water.
Water companies mainly use chloramine and chlorine for disinfection in their tap water. Though harmless to humans, these chemicals can be lethal and harmful to your finned pets.
Traditionally, fish keepers just let the tap water sit in a bucket for a couple of days to make it safe for aquarium use. That’s because chlorine is quite unstable with a short lifespan. In fact, most of the chlorine content in tap water will be released into the air after a day.
But, tap water nowadays also contains chloramine since it is believed to be a better disinfectant than chlorine. Plus, chloramine is a compound that is way more stable. Even if you let it sit in for a week, it will not go anywhere unless you neutralize it using an aquarium water conditioner. And, an aquarium water conditioner does not just remove these chemicals.
Some aquarium water conditioners also have other features and functions. For instance, they can remove heavy metals as well as nitrates, nitrites, and ammonia in the water. And, depending on the aquarium water conditioner, it may help create a slime coating that is vital for protecting your fish as well.
With a ton of perks to offer, an aquarium water conditioner is an absolute must-have supply for fish owners. Choosing the best aquarium water conditioner, however, is not easy, especially if you are new to the world of fishkeeping.
With a plethora of water conditioners available in the market today, figuring out which one is best for you can be pretty tough. Thankfully, there are plenty of tricks and ways to score the best aquarium water conditioner. And guess what? I am going to unveil all of them to you.
As a bonus, I will share my reviews of the best aquarium water conditioners today.
Table of Contents
Types Of Aquarium Water Conditioner
Before revealing my top picks, let us first discuss the different kinds of aquarium conditioner. Once you discover the different types of water conditioners, you will easily find the water conditioner that best fits your needs and preferences.
Dechlorinator removes chlorine instantly but leaves heavy metals and ammonia. Although they are becoming less popular, there are still pet stores that sell these aquarium water conditioners.
By the way, this water conditioner can lead to dangerous levels of ammonia if the tap water you are using has chloramine.
This water conditioner first instantly removes chlorine from tap water. Then, it breaks down the chloramine content and soon neutralizes ammonia.
Some chloramine neutralizer brands also neutralize the water’s heavy metals. But, other water conditioners do not have this feature, so do not forget to check the packaging before buying one.
Complete Water Conditioner
When fish keepers mention aquarium water conditioners, this is the variety they are usually referring to.
Like its title suggests, this aquarium water conditioner does everything, including:
- Protects slime coats for fish
- Buffers water’s PH level
- Removes copper
- Detoxifies the water’s heavy metals
- Neutralizes the water’s ammonia
- Eliminates the chlorine content
Reverse Osmosis Water Conditioner
It, technically, is not a water conditioner, but instead a re-mineralizer. Both hobbyists and manufacturers, however, often call it a water conditioner.
A lot of reverse osmosis systems remove tap water nasties, like chloramine and chlorine. So, there is virtually no need for you to use any water conditioner with this system.
Unfortunately, reverse osmosis, or also known as RO, removes the trace elements that are vital for a healthy aquarium, such as magnesium, sodium, potassium, and calcium.
But, a reverse osmosis water conditioner essentially replaces the minerals lost in the RO process.
Aquarium Water Conditioner Comparison Chart
Itching to find the best aquarium conditioner? Then, check out this informative comparison chart of the best aquarium water conditioners in the market.
|Product Name||Quantity||Aquarium Type||Removes/Neutralizes|
|Seachem Prime Aquarium Water Conditioner - Best Overall||50 ml to 2 liters||Saltwater and freshwater||Heavy metals and chloramine|
|Api Stress Coat Aquarium Conditioner - Best for Fish Tissue Regeneration||1 oz to 1 gallon||Freshwater||Ammonia and chlorine|
|Tetra Aquarium Water Conditioner - Best Budget||1.69 to 33.8 oz||Marine fish and freshwater||Heavy metals and chloramine|
|Aqueon Aquarium Water Conditioner - Best Odorless Conditioner||8 oz to 1 gallon||Saltwater and freshwater||Ammonia, heavy metals and other elements|
|Tetra Betta Aquarium Water Conditioner - Best for Betta Fish||50ml||Freshwater||Heavy metals, ammonia, chloramines and chlorine|
|Natural Rapport Water Conditioner - Best for Live Reef Tanks||16 oz||Saltwater and freshwater||Heavy metals, chloramine, chlorine, nitrate and ammonia|
|Hikari Usa Ultimate Water Conditioner - Best Fast-Acting Solution||4 oz||Saltwater and freshwater||Chloramine and toxic metals like nitrites|
|Api Tap Water Aquarium Conditioner - Best for Dechlorinating Water||1.25 to 64 oz||Saltwater and freshwater||Complete dechlorinates water|
|Instant Ocean Aquarium Water Conditioner||10 to 200 gallons||Saltwater||Heavy metals|
|Seachem Stability||500 to 1.000 ml||Saltwater and freshwater||Nitrate, nitrites and ammonia|
|Fluval Aquarium Water Conditioner||16.9 oz||Saltwater and freshwater||Heavy metals, chloramines and chlorine|
|Kordon Novaqua+ Water Conditioner||4 or 16 oz||Saltwater and freshwater||Chloramine, chlorine heavy metals|
|Microbacter7 Aquarium Water Conditioner||125 ml to 2 liters||Saltwater and freshwater||Ammonia, phosphates, nitrites, nitrates and nitrogen|
|Tankfirst Aquarium Water Conditioner||NA||Saltwater and freshwater||Ammonia and nitrate|
|Tetra Easy Balance Water Conditioner||16.9 oz||Saltwater and freshwater||Phosphate and nitrate|
Which Are The Best Aquarium Water Conditioners To Buy?
Looking for something a little more specific? Then, check out my compilation of the best aquarium water conditioners! Whether you are looking for the perfect water conditioner for betta fish or live reef, you will find valuable options and tips on this list.
- Best Overall – Seachem Prime Aquarium Water Conditioner
“Praised for its reliability and effectiveness, this wallet-friendly option quickly and proficiently eliminates all harmful chemical threats in your aquarium.”
- Best for Fish Tissue Regeneration – API Stress Coat Aquarium Water Conditioner
“With its synthetic slime coat and aloe vera content, this conditioner is extremely useful in promoting regenerating and healing damaged tissues.”
- Best Budget – Tetra Aquarium Water Conditioner
“This incredibly affordable conditioner is perfectly concentrated and impresses users with its wide range of features.”
- Best Odorless Conditioner – Aqueon Aquarium Water Conditioner
“Made 100% in the USA, this odor-free solution was engineered carefully to instantly and efficiently remove chloramines and chlorine from tap water.”
- Best for Betta Fish – Tetra Betta Aquarium Water Conditioner
“With its complete fast-acting formula, this conditioner makes tap water incredibly safe for bettas and other small ornamental fish.”
- Best for Live Reef Tanks – Natural Rapport Aquarium Water Conditioner
“Suitable for freshwater and saltwater tanks, this superior grade conditioner creates a healthy live reef environment.”
- Best Fast-Acting Solution – Hikari USA Ultimate Aquarium Water Conditioner
“Billed as the world’s first-ever full-function aquarium water conditioner, Hikari quickly creates a safe environment for your pets.”
- Best for Dechlorinating Water – API Tap Aquarium Water Conditioner
“This highly concentrated and astounding conditioner prevents tap water from fish death, tissue irritation, and gill destruction.”
Top 15 Best Aquarium Water Conditioner Reviews in 2021
Product reviews are a godsend for potential buyers of any item or piece of equipment. It provides you a close and more in-depth look at the product and lets you determine if it is an excellent fit.
That is why I have created these reviews of the best aquarium water conditioners on the market today.
1. Seachem Prime Aquarium Water Conditioner
Seachem Prime is often rated as the best aquarium water conditioner, and with good reason. Like most potent aquarium water conditioners, Seachem Prime removes chloramine and chlorine from tap water as well as neutralizes its heavy materials.
But, Seachem Prime does a whole lot more than a typical aquarium water conditioner can do.
With Seachem Prime, you get to convert ammonia into safe and non-toxic ammonium, which is easily removed by the biofilter of your tank. Furthermore, it consists of ingredients that bind nitrites and nitrate, ultimately eliminating them from aquarium water.
On top of it all, it uses natural ingredients to promote the health of your fish’s slime coat instead of using artificial compounds.
- Safe to use
- Effective detoxifier
- Powerful tap water treatment
|Size||50 ml to 2 liters|
|Dimensions||3.2 by 3.2 by 9 inches|
- Does not affect the tank water’s pH level
- Removes all the harmful chemicals from your water’s heavy metals
- Breaks down actively nitrite chemicals and nitrates
- No expiration date
- Has a funny smell
2. API Stress Coat Aquarium Water Conditioner
(Best for Fish Tissue Regeneration)
API Stress Coat is, truthfully, a little more specialized compared to other aquarium water conditioners on my list. Sure, this product still eliminates heavy metals, chlorine and chloramines from tap water, making it safe for the fish in your aquarium.
But, its main selling point and the primary target is to minimize fish stress. Unlike other aquarium water conditioners, this one has some aloe vera content, infused to promote regeneration as well as heal wounds and damaged tissues.
Additionally, it creates a synthetic slime coat to minimize the loss of fish’s electrolytes. And, it is pretty versatile too, suitable for goldfish, temperate fish as well as ideal for coldwater, saltwater and tropical aquariums.
- Reduces fish stress
- Aloe vera extract
- Removes tap water chemicals
|Dimensions||5 by 1 by 5 inches|
- Proven scientifically to reduce stress among fish by 40 percent
- Suitable for saltwater and freshwater
- Promotes regeneration and regrowth of fin
- Works quite well with other products
- Contains phosphates and silicates
- Little effect on reducing ammonia
3. Tetra Aquarium Water Conditioner
Tetra Aquasafe may seem pretty basic when it comes to aquarium water conditioners. Even so, that does not mean it is a run-of-the-mill and unimpressive product.
After all, it comes from a dependable brand and handles its tasks effectively and quickly. As a matter of fact, the solution works in a few seconds, meaning you do not have to wait until the water is safe for your aquarium.
Its primary purpose is to eliminate chloramines and chlorine from tap water. Of course, it is formulated to also neutralize the common heavy metals in tap water.
And, did I mention that it has a natural slime coat that prevents infection for your fish?
- Advanced formula
- Natural slime coat
|Size||1.69 to 33.8 oz|
|Dimensions||2.5 by 4.8 by 9.8 inches|
- Has a beneficial blend of minerals and vitamins
- Promotes beneficial bacteria growth using proprietary biopolymers
- Suitable for saltwater and freshwater tanks
- Needs another product to remove ammonia
4. Aqueon Aquarium Water Conditioner
(Best Odorless Conditioner)
While it is a little inexpensive, the Aqueon Aquarium Water Conditioner certainly does not scrimp on effectiveness or quality.
Aside from the top water’s chloramines and chlorine, the conditioner also neutralizes ammonia and heavy metals.
And, that makes it the perfect solution for setting up new aquariums or cleaning aquariums that have not been cycled.
Even better, this aquarium water conditioner contains solutions and ingredients that restore the natural slime coat of your fish.
It is not as widely and readily available as other brands, but if you can find it, this product is totally worth it.
- Dosage cup included is convenient
- Makes tap water instantly safe
- Detoxifies harmful elements caused by fish waster
|Size||8 oz to 1 gal|
|Dimensions||2.5 by 8.4 by 2.5 inches|
- Made 100% in the USA
- Promotes fish healing
- Prevents stress when changing tank water
- Leaves a little brown foam on the tank’s top
5. Tetra Betta Aquarium Water Conditioner
(Best for Betta Fish)
Tetra Betta, as the name suggests, is a premier aquarium water conditioner designed for betta fish. It works incredibly well in keeping the slime layer of your betta in tip-top shape. And, it makes sure that your aquarium is a safe and healthy environment for your fish and plants by removing heavy metals and chlorine.
Another upside to this aquarium water conditioner is that it is a fact-acting solution that works in a few seconds.
Of course, this conditioner is not only suitable for bettas, but for other small ornamental fish as well.
- Complete water conditioning formula
- Reduce fish stress
|Dimensions||1 by 1.9 by 3.7 inches|
- Highly recommended for all Betta fish owners
- Provides protective fish slime coating
- Relatively cheaper than other brands
- Incorrect dose can affect its performance and effectiveness
- Size of bottles comes in a small quantity
6. Natural Rapport Aquarium Water Conditioner
(Best for Live Reef Tanks)
You will love this incredible all-in-one water conditioner. It immediately removes chlorine as well as detoxifies heavy metals, chloramine and nitrites.
Moreover, it adds some electrolytes to the aquarium water, helping promote fish health. And, amazingly, this aquarium water conditioner does not affect the pH level of your tank’s water.
You may use this conditioner during maintenance, water change, or setting up a new fish tank. Also, it is suitable in both saltwater and freshwater aquariums.
Of course, it is the ultimate water conditioner for aqua live reefs.
- Professional grade aquarium water container
- All-in-one water conditioning solution
- Removes and detoxifies harmful chemicals
- Freshwater and saltwater tanks
|Dimensions||3 by 3 by 8 inches|
- Perfect for live reef fish tanks
- Promotes a healthy slime coat
- Safe for crustaceans, plants, and invertebrates
- No need for any additional supply or conditioner
- Can make the water a little cloudy
7. Hikari USA Ultimate Aquarium Water Conditioner
(Best Fast-Acting Solution)
Hikari USA, on the surface, may seem like an ordinary aquarium water conditioner. Like most aquarium water conditioners on this guide, it provides exceptional water conditioning to provide a safe and thriving haven for your fish.
With its potent formula, it effectively eliminates ammonia, chlorine, and chloramines from tap water.
And, it detoxifies nitrites and heavy metals while adding essential electrolytes for your aquatic friends. Plus, it provides slime coating for your fish.
But, what separates this conditioner from the pack is its ability to improve the water’s alkalinity.
To me, it is ideal for setting up a new fish tank because it quickly “ages” its water.
- Creates and healthy and superior aquatic environment
- First-ever full-function aquarium water conditioner in the world
- Complete solution
- Reduce fish stress
- Ages the water instantly
- Removes ammonia effectively
8. API Tap Aquarium Water Conditioner
(Best for Dechlorinating Water)
API tap water is formulated to purify the aquarium water that comes straight out of your faucet or tap. The formula is available in a multitude of bottle sizes, meaning you can choose the right one that fits your budget and preference.
As with all the solutions we have mentioned earlier, this one helps reduce aquarium water’s chloramine and chlorine toxicity, generally making the tap water safe for your finned pals.
It is ideal if you are adding some fish into new aquarium water or changing it to help keep things healthy and fresh.
Furthermore, it is suitable for both saltwater and freshwater fish.
- Highly concentrated
- Prevents fish death, tissue irritation, and gill destruction
- Neutralizes chemicals
|Size||1.25 to 64 oz|
|Dimensions||2.5 by 2.5 by 8.8 inches|
- 1 teaspoon treats 10 gallons of tank water
- Does not affect your water’s pH level
- Reduces levels of the toxin of both chloramines and chlorine
- Does not effectively remove ammonia
9. Instant Ocean Aquarium Water Conditioner
Are you a reef hobbyist who is looking for the best aquarium water conditioner? Then, do not forget to consider this Instant Ocean product as one of your top options.
Unlike other water conditioners, this one is specially formulated and designed for reef aquariums.
Not only does it encourage coral growth, but it is perfectly safe for different kinds of corals in your aquarium.
It works quite well on anemones, Coraline algae, and Stony coral.
Another upside to this conditioner is that it contains minerals like calcium and magnesium.
And, it is free from nitrogen phosphate and detoxifies the water’s heavy metals.
- Metal detoxifier
- Extra vitamins
- Specially formulated for reef tanks
|Size||10 to 200 gallons|
|Dimensions||10.5 by 14.8 by 11.5 inches|
- Contains an essential mixture of salts
- Loaded with minerals and vitamins
- Perfect for reef tanks
- The water sometimes turns to yellow with this product
10. Seachem Stability Aquarium Water Conditioner
This outstanding formula is the result of extensive research and meticulous development. It was designed carefully to prevent the common “new aquarium syndrome” which is one of the leading causes of death for the domesticated fish.
Since the unhealthy biological environment of a newly set up tank is not safe, Seachem has created this formula to make things easier for fish keepers.
With its patented formula, this conditioner creates a safe and healthy biofilter environment for your fish. Plus, it contains bacteria that mainly facilitate the breakdown and removal of harmful chemicals, such as nitrite, nitrate, and ammonia.
- Safe to use
- Healthy bacteria growth
- Tank stabilization
|Size||500 to 1,000 ml|
|Dimensions||7.6 by 2 by 1.5 inches|
- No harmful effects
- Safe even when overused
- Excellent water stabilizer
- Creates a healthy aquatic environment
- You cannot cycle your aquarium for about 20 days when using this solution
11. Fluval Aquarium Water Conditioner
Fluvan Hagen will, without a doubt, make fishkeeping a little easier and painless on your end. With this formula, you get to immediately eliminate toxic molecules like chlorine from tap water.
Not to mention, it is a premium quality product that you can add to your fishkeeping maintenance arsenal.
Try to use it as your primary dechlorinator when moving fish. Trust me, there will be zero fish casualties with this product.
And, it takes a couple of minutes for it to take effect on your tank. Did I mention that it is one of the most effective nitrate removing formulas for freshwater aquariums?
- Stress-reducing solution
- Makes tap water safe for aquatic animals
- Neutralizes heavy metals, chloramines and chlorine
- Suitable for saltwater and freshwater use
|Dimensions||3 by 3 by 6.5 inches|
- Ideal fish stress reducer
- Counteracts chlorine, chloramines and heavy metal
- Safeguards the mucous membrane of fish
- Makes tap water safe and risk-free for aquarium dwellers
- Not a concentrated formula
- Double doses required to remove chloramine
12. Kordon NovAqua+ Aquarium Water Conditioner
Kordon Novaqua is not as well-known as some of the top brands mentioned in this guide. Nonetheless, it is an excellent water conditioner that you should consider buying.
Not only does it sort out those pesky chloramines and chlorine, but it also neutralizes the tap water’s common heavy metals.
Plus, it contains electrolytes as well as organic herbs and vitamins that enhance the water quality of your aquarium.
And, it comes with a protective slime coat, which helps decrease the risk of fish inflammation and infection.
- Loaded with vitamins and minerals
- Remove tap water’s heavy metals
- Safe to use
|Size||4 or 16 oz|
- Lasts up to over 4 years when used properly
- Contains vitamins and beneficial herbs
- Eliminates iodine
- Has a slime coat
- May clog aquarium filters with frequent use
- Harder to find compared to the more famous brands
13. MicroBacter7 Aquarium Water Conditioner
They do not call MicroBacter 7 as one of the best aquarium water conditioners in the world for nothing. With this superb aquarium conditioner, you get to reduce your tank’s organic carbon, phosphates, ammonia, nitrites, nitrogen and nitrates.
Moreover, it includes microbes and enzymes that are potent and essential for your aquatic pets.
And it is recommended all over the world, especially since it has been tested and proven by veterinarian pathologists.
Another upside of using this product is that it helps photosynthetic organism growth. Also, it minimizes hydrogen sulfide production and increases the concentrations of oxygen.
- Made 100% in the USA
- Recommended and tested by veterinarian pathologist
- Creates biological filtration in new fish tank setups
|Size||125 ml to 2 liters|
|Dimensions||2.5 by 2.5 by 6.8 inches|
- Improves water quality
- Eliminates harmful chemicals
- Encourages photosynthetic organism growth
- Not as effective in removing chemicals as compared to other premier brands
14. TankFirst Aquarium Water Conditioner
Some aquarium water conditioners, even the best ones, smell a little bit funny and horrible. Thankfully, TankFirst instantly recognized this problem and put a stop to it.
Unlike other aquarium water conditions, this one uses natural additives that do not release any unpleasant odor.
Of course, this conditioner is beneficial, thanks to its cutting-edge formula. Suitable for all types of aquariums, this conditioner instantly makes tap water safe by removing contaminants, like heavy metals, ammonia, nitrites, and chloramine.
And, it is cost-effective too. A teaspoon or a capful can treat an aquarium of 10 gallons.
- Cutting-edge water conditioning formula
- Outstanding results
- Superior water conditioning performance
- Safe to use
- No horrible smell
- Keeps water consistently clean
15. Tetra Easy Balance Aquarium Water Conditioner
Say goodbye to tough tank cleaning tasks! With this aquarium water conditioner, you will not have a tough time maintaining and cleaning your tank regularly.
After all, this water conditioner functions like a multipurpose solution that can help you save some time, energy, and cash.
With this aquarium water conditioner, you get to fight toxins, chemicals, and other kinds of threats that will put your finned buddies in danger.
But, on the low side, the water turns a little cloudy when you add it to the aquarium. Luckily, it vanishes in a couple of hours.
- Removes waste proficiently
- Balances alkalinity and pH
- Maintains a healthy aquatic environment
- Adds nutrients
|Dimensions||2 by 3.8 by 8.5 inches|
- Contains electrolytes, minerals, and vitamin
- Reduces phosphates and nitrates
- Safe to use
- Makes the water slightly cloudy
How To Find The Best Aquarium Water Conditioner?
Need some buying tips? Here is a short and quick list of the things to consider as you search for the best aquarium water conditioner.
Pond Or Fish Tank
Each water conditioner is, for the most part, designed for either a pond or an aquarium. Although they are exceptional aquatic environments, these two are different in many ways.
For instance, ponds typically are larger, in terms of water volume, than fish tanks, meaning they need larger doses of a water conditioner.
Also, ponds tend to have larger surface areas, meaning that their chlorine is liberated naturally from its water through evaporation. That is why water conditioners for ponds often have fewer amounts of dechlorination chemicals.
The best aquarium water conditioner has essential electrolytes that help improve the overall health of your fish and even aquatic plants.
Saltwater Or Freshwater
A lot of water conditioners are suitable for both freshwater and saltwater use. But, not all aquarium water conditioners are built like this.
So, make sure to review the product description of the conditioner, to verify if it is suitable for the type of aquarium you have.
The best aquarium water conditioner has the substances needed to restore all the damage done to the tissues of your fish. And, one of the substances that protect your fish from any kind of disease and external infection is the slime coat.
To keep your finned pets healthy and safe, some aquarium water conditioners add a synthetic slime coat to their formula.
So, if you want to add more protection to your aquatic friends, my advice is to purchase an aquarium water condition that comes with a slime coat.
Moving your aquatic pets, as you change the aquarium water, may be stressful and even traumatic for your fish.
To reduce the damage caused by this process, you should buy an aquarium water conditioner that has stress control properties.
Chloramine is a blend of ammonia and chlorine. Some aquarium conditions just remove chlorine and retain the ammonia.
Since ammonia is rather toxic, that can cause stress to your fish.
For best results, always go for an aquarium water conditioner that detoxifies ammonia and removes chlorine.
Price Per Gallon
Let us be realistic. Price of the producet may have a lot to do with the type of aquarium water conditioner you decide to buy.
We all want to have an unlimited budget for our aquariums, but unless we win the jackpot in the lottery, we have to get the best bang for our buck.
I am really encouraging you to evaluate and see if the product you are buying is worth every cent by computing its price per gallon ratio.
The label of the conditioner will tell you how many gallons the entire bottle treats. When you divide the product’s price by the gallon number it treats, it will reveal the price per gallon ratio.
Spend some time comparing the price per gallon. And, you might find out that some of the so-called bargain products are not exactly a great value since they do not treat aquariums many gallons a bottle.
Always carefully read the conditioner’s essential ingredients. Although Vitamin A, E, or other fancy compounds seem enciting, they may seriously mess with your tank’s filtration system.
Do a little research and see if the product’s key ingredients are suitable for the fish in your aquarium.
Furthermore, you may purchase aquarium water conditioners that are tailored for a specific type of fish, such as the Tetra Betta safe aquarium water conditioner.
My Top Pick
Seachem Prime is, by far, the best aquarium water conditioner on the market in 2021. Highly rated and popular, this conditioner is pretty affordable and easy to use.
Plus, it does everything you need to ensure your tap water is safe for your fish. Once you have added it to the water, the conditioner effectively removes all the chloramine and chlorine chemicals.
Plus, it detoxifies your aquarium’s tank and converts ammonia into a substance that is easily removed through the standard biofilter of your tank.
And, it does not affect the alkalinity and pH level of your aquarium water. All in all, it is the ultimate solution for anyone who needs a proficient aquarium water conditioner.