i have 2 tanks at home (a 22L and a 40L). i currently have the betta in the 22L tank because my big tank is having problems with its PH levels. my betta's tank is steady 7.4 (same as the tap water) but my other one is too high.
it is reading at 8.0! i am happy with my betta in his tank (22L with 7.4 PH) but i want some tropical fish in my other tank.
i have already changed my gravel to a different brand, colour ect but the PH is still sky high. i havent tried ph down because i thought changing my gravel would eliminate the problem.
all i have in this tank is the white gravel (i think it is the natural stuff), 2 plastic plants and a fake rock cave. any ideas as too whats causing the problem?