

💧 Transform your tap water into a fish-safe oasis instantly!
API TAP WATER CONDITIONER is a highly concentrated liquid formula that neutralizes chlorine, chloramines, and heavy metals in tap water, making it safe for all freshwater and saltwater aquariums. Trusted by over 24,000 users with a 4.7-star rating, it prevents fish gill damage and tissue irritation, ensuring a healthy aquatic environment with just 1 ml per 20 gallons. Ideal for new setups, water changes, and adding new fish, API delivers fast-acting, reliable water treatment backed by 60 years of aquarium care expertise.













| Brand | API |
| Customer Reviews | 4.7 out of 5 stars 24,121 Reviews |
| Item Form | Liquid |
| Item Weight | 1.2 Pounds |
| Liquid Volume | 16 Fluid Ounces |
| Manufacturer | Mars Fishcare |
| UPC | 017163003526 |
T**O
A Must-Have for Aquatic Health!
I’ve been using API TAP WATER CONDITIONER for a few weeks now, and I’m extremely impressed with its effectiveness in keeping my aquarium water clean and safe for my fish. Here’s why I’m giving it a 5-star review: 1. Perfect for New Aquariums and Water Changes: I’ve recently set up a new tank, and this conditioner has been a lifesaver. It quickly removes harmful chlorine, chloramine, and heavy metals from tap water, which could be toxic to fish. It ensures the water is safe to use without waiting for the water to sit for days. 2. Safe and Effective for All Fish Species: Whether I’m adding new fish to my tank or doing a routine water change, I feel confident using this product. It’s safe for all types of freshwater fish, including my delicate species. I haven’t noticed any signs of stress in my fish after water changes, which speaks volumes about the quality of this conditioner. 3. Easy to Use: The API TAP WATER CONDITIONER is super easy to use. I simply add the recommended amount per gallon of water, and it instantly works its magic. No hassle, no mess—just pour and go! 4. Great Value for Money: Considering the price and the amount of product you get (16 ounces), this conditioner is a great value. It lasts for a long time since you only need a small amount with each water change, making it an affordable option for any aquarium owner. 5. Fast Acting: The conditioner works fast! I can fill the tank with treated water and immediately begin acclimating new fish. I’ve had no issues with cloudy or unsafe water when using this conditioner, and it’s consistently kept the water quality at its best. 6. Trusted Brand: API is a well-respected brand in the aquarium industry, and it’s a name I trust when it comes to my fish’s health. Their products are always reliable and effective. Final Thoughts: If you’re an aquarium owner, whether you’re new to fishkeeping or a seasoned pro, I highly recommend the API TAP WATER CONDITIONER. It’s safe, affordable, and does exactly what it promises—ensures clean, safe water for your fish and keeps them happy and healthy. 💯 Five stars – a must-have for any aquarium enthusiast!
M**E
Excellent value. Have been using for years. Would never buy anthing but this.
I swear by this stuff. It's perfect for water changes. I use it in all my aquariums and in my pond. I never mix water first. I just do it in the tank. I do add water slowly though. It has no smell or color. It works very fast. It is highly effective. I add one cap full for every 30 gallons of water in my tank and it always works. It says add such and such for every gallon that you add, but I do the math by the water volume of my tank since I am adding tap water directly to my tank. A couple of drops is all you need for a gallon if you are only topping it off. I do about 70% water changes biweekly using this stuff. If you are having dead fish most likely the issue is because of temp, adding it too fast, or you just need to add more. I have even added way more than it needed by accident. It had literally no effect on my fish or plants at all. Very hard to overdose your tank unless you dump in the whole bottle. I do wear gloves when using this product. Can't be too careful. And eye protection too.
M**E
Healthier water for healthier plants
Looking forward to healthier and happier plants. Going by all the reviews, this product seems to stand the test of time. I haven’t used it yet, but I’m certain it is much more effective, and of way higher quality, than tap water. No smell. And the cap has a 1 mL measurement which is really nice for me, since I use gallon, or less, containers, for watering. Great expiration date for lasting a long time.
Y**S
My Go-To Water Conditioner for Every Water Change
I love this API water conditioner because it does exactly what it promises. It instantly neutralizes chlorine and chloramines, which gives me peace of mind during water changes. I’ve noticed my fish are more active and the water stays clear. Plus, it lasts a long time since you only need a small amount. Definitely a must-have for any aquarium.
J**P
Awesome Product-Funky Smell
I bought this water conditoner for my betta tank. It does a great job and conditioning the water, and the measuring cap comes in handy. This stuff doesn't detoxify ammonia and nitrite like Seachem Prime does, but still gets the job done for my betta. It is a huge bottle that can last forever as well! The only thing is the smell is kinda funky, like boiled eggs. However, this is a great budget conditioner!
K**S
This stuff works!
I purchased this nearly 2 years ago and it is still over half full. I have 3 fish tanks totaling 150 gallons of water and roughly 80 houseplants. So I USE this stuff. But it only takes a drop to condition a gallon of water. This product at this price is an absolute STEAL! I have water testers that test for chlorine and this stuff never fails to neutralize the chlorine in the water.
S**S
Great for plants too
It is intended for aquariums, but it works well for watering my plants as well. The tap water in Vegas is downright awful and my house plants have been SO happy with this little addition to their water. I like not having to buy gallons and gallons of distilled water; I can save that for the plants that actually need it. It's also very easy to use, I just use a little plastic pipet to add the amount needed.
B**S
Best Ever!
I have had fish as long as I can remember. I have had my share of different tanks and filtration systems. A few months ago my tank was becoming extremely cloudy within days of water changes. Never had a problem as severe as that. I was blaming it on the towns water source and was at my wits end trying to keep it clear. I have never used a water conditioner before and decided to give it a try. I found this API Tap Water Conditioner and liked the reviews. Two days after my first use my water became more clear than I have ever seen it. Not only did it clear the water perfectly, it has stayed clear for over a month now. Will never do a water change again without using this conditioner.
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