At first I used PH Up and PH Down liquids but they didn't work at all (I only used PH UP). My 20 gallon freshwater tank is a monster when it comes to water control, but as anyone in the hobby knows, smaller aquariums require more attention. I have an alkaline buffer and it's amazingly effective. The results are immediately visible and safe for fish even if I increase the dose from 6.8 to 7.8 per dose. In addition, the reservoir remains stable for longer. Weekly) and 20-25% water changes (4-5 gallons per week). I add 1/2 teaspoon or 1 teaspoon and it stays stable at a very comfortable 7.6-7.8. There is a ton of quick dissolving powder in the bottle which I suspect will last at least a couple of years at the speed I'm using. NOTE: This will make your water very cloudy for a short time - this is harmless to fish and will clear up after a few hours. The Chinese Oranda has a PH of around 8.0 - the rest of the fish, snails and my two fiddlers like around 7.0 or a bit higher so all are quite happy with 7.6-7.8.
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