API PH Down Aquarium PH Adjuster, 16-Ounce

Works just as described! Will be back for more, i'm already almost out!! Keep em stocked for me ha ha

I have a 150 gallon tank and kept having my ph rebound. I had to use almost the whole bottle and I don't think I was supposed to. Ended up buying proper ph 7 and that seems to be doing the trick.

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As opposed to some other reviewers, we have never had an issue with this product. Fish are very sensitive to pH change and, most likely, people that have had issues have used the product incorrectly. First, take the pH of your pond or tank (especially pond) at least 3 times during the day, morning, noon and night. The pH can change as much as 0.03, so always start from your highest pH. Second, do not alter the pH by more than 0.01 per day, waiting 2 or 3 days in between additions is even better. Third, don't look for an "ideal" pH, fish can survive in a wide range and sometimes your tank or pond is just a bit high. It's better for the fish to live in a pond which has a high pH than one that has a constantly changing pH. Remember kH as well (alkalinity) plays a factor, so be careful about balancing. That said, if your pH is high and your ammonia is high, use of this product can be very helpful. Ammonia is far worse at high pH, at pH of 9.0 and high ammonia can be deadly and if you face a situation such as that combination, this product, used correctly, can be very helpful.

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It does work... I have tap water in a 75 gallon freshwater fish tank with an 8.4 PH level (extremely HIGH)... I used 150 ML (over 5 ounces) of this product and the Ph level is now 7.2. Now I can use my tap water for my fish.

THANX

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This stuff just does nothing! I guess my tank just wants to be 7.6. It does not seem to bother my barbs/cichlids/catfish/pleco so I give up!

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