Join Date: Jul 2018
Location: San Carlos, Mexico
The pH in my 55 gal tank is stuck at 7.6. Because I live in Mexico, when I set up the tank I was unable to find any substrate other than pea gravel until I went to the local hardware store and found a 5 pound bag of what looked like pulverized stone painters use here to add texture to walls. After cleaning and sterilizing, I used about an inch of it as the base, then covered with pea gravel and lava rock. A month later I found out the "stone"had a high concentration of lime. (It dissolved with muriatic acid.) I have added wood from the desert and added more lava rock to cover the "stone". My question is: can I reduce the pH without breaking down the entire tank and removing the white stone? Do I need to lower the pH when all the fish look happy?