In my 300L thank i keep getting PH drops. Water ph here is about 7.
I have a small Oscar, 2 Bichirs, Pleco and 2 Hoplos.
My KH is 4 and GH is 3. Should they be higher? If so what should i use to increase the KH and how high should i aim for? Iv been using Sera PH/KH plus and have none left. I have been adding minerals to my tank also
Tank is fully cycled and this problem has only started in the last 3 weeks