

⚡ Keep your fish thriving with perfectly balanced water — because your aquarium deserves the best!
API PROPER pH 7.0 Freshwater Aquarium Water pH Stabilizer is a scientifically formulated treatment that sets and maintains a neutral pH of 7.0 in freshwater aquariums without live plants. It detoxifies tap water by removing chlorine, chloramines, and heavy metals, ensuring a safe, stable environment for tropical fish. Ideal for new setups, water changes, or pH adjustments, this 8.8-ounce container offers easy dosing and trusted performance from a brand with over 50 years of aquarium care expertise.













| ASIN | B000255N7S |
| ASIN | B000255N7S |
| Best Sellers Rank | #10,884 in Pet Supplies ( See Top 100 in Pet Supplies ) #90 in Aquarium Water Treatments |
| Brand Name | API |
| Color | Multicolored |
| Country of Origin | United States |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,779) |
| Date First Available | June 20, 2004 |
| Date First Available | June 20, 2004 |
| Department | Unisex-Adult |
| Department | Unisex-Adult |
| Directions | Use when setting up a new aquarium, adjusting pH in an established aquarium and changing water. Shake well to mix powder. Add 2 teaspoons for every 10 U.S. gallons (38 L) of Repeat dose test indicates change more than .2. Not use aquariums containing live plants. Tips: keep fish healthy colorful, it is necessary maintain stable the proper range. When keeping mixed community fish, neutral (7.0) con… |
| Is Discontinued By Manufacturer | No |
| Item Dimensions LxWxH | 2.13 x 2.13 x 5 inches |
| Item Package Dimensions L x W x H | 5.24 x 2.09 x 2.05 inches |
| Item Weight | 0.5 Pounds |
| Item model number | 36C |
| Item model number | 36C |
| Language | English |
| Language | English |
| Manufacturer | Mars Fishcare |
| Manufacturer | Mars Fishcare |
| Material | Plastic |
| Model Name | PROPER PH 7.0 PWDR JAR-SMALL |
| Number of Items | 1 |
| Product Dimensions | 2.13 x 2.13 x 5 inches; 8 ounces |
| Size | pH 7.0 |
| Style | pH 7 |
| Target Audience Keyword | fish, fish;algae-eaters; betta-fish; bottom-feeder-fish; cichlid-fish; goldfish; invertebrate-fish; mollusks; octopuses; rays; sharks; snails |
S**N
works well
this product works great ph in my area is naturally low so one a week i add this gets my ph were it needs to be great price on line as compared to the pet store
B**B
Amazing!!
I have had an aquarium in my house for over 30 years, and where I live, have always struggled to control the pH of my tank. The water in my area just inherently has a high pH. I have purchased various products to lower the level, but while they work initially, they do not maintain the level beyond a day or two. I was understandably skeptical that this product would be any more effective, but it has turned out to be amazing. The pH was immediately corrected as soon as I put the powder in the tank, and it has stayed constant in between water changes. It causes no change to the clarity of the water and has no detrimental effect on the fish. Definitely recommend.
C**.
Works great for me.
I found this product to be very helpful in maintaining my aquarium at7.0. Don't expect this to be a miracle cure that keeps your tank perfectly at7.0 forever. This is meant to be something that helps you to avoid sudden shifts in pH, maintain a relatively stable pH between tank changes, or helps to bring your pH back to 7.0 when something altered it. There really is no true way to keep an aquarium exactly at 7.0, and if the pH is changing rapidly that would be an indicator that there is something wrong with the overall water quality of the aquarium. Simply forcing the pH to remain at 7.0 doesn't mean water changes can be skipped or that overfeeding won't harm the water quality; all it really means is that the pH is within the ideal range of 7.0. I do bi-weekly water changes in my 40 gallon tank, and between changes I use this to maintain the pH at or around 7.0. My pH will drop to about 6.7 and this brings it back to 7.0, and then by the next water change it will be about 6.7 again until I change the water. This isn't meant to keep your tank at 7.0 forever, but it works great to help maintain a healthy aquarium. If you find that this doesn't dissolve in the aquarium or it leaves the water cloudy you can dissolve it in water before putting it in the tank. I don't mind the cloudiness because when used in the recommended amounts it only stays cloudy for about 15-20 min as it dissipates into the water. I really don't see any reason why this would harm your filtration media when used properly. If anything the particles would get stopped in the filtration media which reduces the cloudiness as it continues to dissipate.
A**Y
Great for Maintaining Stable pH Levels
This has been a reliable addition to my freshwater aquarium maintenance routine. It effectively keeps the water at a consistent 7.0 pH, which is ideal for my fish. The instructions are clear, and the product is easy to use. My only reason for giving it 4 stars instead of 5 is that it takes a bit longer to dissolve fully than I expected. Overall, it's a solid choice for keeping your aquarium water stable and healthy!
T**H
NA
Excellent
D**N
Works wonders
Worked wonders. Wasn’t able to get the Ph up in my tank and after a few treatments it’s at 7.
C**A
Okay
Brought my low ph up, didnt take a lot. Not like it suggested I used maybe 1 tsp at night and 1 in the morning. With a 50 gallon it went up to 7.6 with that little.
R**K
Fast shipping
Great item
A**R
Love this,,, works perfect for my 5 gal betta tank,,,, :) he’s so much more happy now with his proper PH :)
D**R
I used this stuff years ago and it worked great, now i use it 20years later and its the same product if not better i love api products as they all seem to work to their best for your needs. Thank you amazon.
G**A
This is a good product, as long you don’t expect it to work over night. The way I found worked well was get containers for weekly water changes. Fill the containers the night before a water change, add all your water conditioner, and add this product. This also prevents shock, as the water becomes room temp, giving your thermostat less work to do, This stabilises the water in the containers to 7.0ph. Obviously it’s not an over night fix which some people think it is but give it 2-4 weeks of weekly water changes and you’ll have 7.0ph continuous. Hope this helps
D**S
Works as it says perfect
S**U
Product as described
Trustpilot
3 weeks ago
2 months ago