Hi folks I’d like your thoughts about water pH and whether to change it. I set up my tank to keep South American fish that like soft water. But over the last three years I have no been able to maintain a low pH and it has always risen to 8.2!
I have used rainwater collected from the roof of my shed which has zero hardness and varies in pH 6-7. I have tried using our tap water which you will all know is about pH 7 but has about 10-12 degrees hardness (not good). I have discovered that the Dorset fine aquarium gravel I bought increases the pH having tested a sample in a glass.
I am chasing soft acidic water and failing. I have noticed that my fish do not seem overly bothered, I have a very healthy shoal of cardinal tetras and Bentosi tetras. But I have lost some neon blue Ram Cichlids.
So what would you recommend I do?
A) Stick with pH 8.2 and acclimatise new fish, staying with South American.
B) Change the fish and keep species that are naturally suited?