ive always had trouble with the ph level in my fish tank.

i bought some ph reducer and it did work but its just temporary.
one of them had babies and i started with 19 of them swiming about in their little box.
now i have 1.

i lost a few here and there which i expected. but today i come home and from there being 14 last night there was 5 floating and 1 swimming. no idea where the other 8 are.

i checked the ph level and nitrate level. the nitrate level was fine, but the ph was up again.


is there anything i can do to drop the ph level permanently?

cheers