i use a heavy metals filter and the water parameters are
ph 7-7.5, gh-12, n02 0 and n03 very low. 60 ltr tank 6 zebs
i use a fluval 3 internal filter.
heres the idea if i buy a external canister filter ehiem 2213 and pack it with peat, would this over time lower the ph & gh say to ph 6.5 and gh 8 ?. i relise that the water would'nt start softening until it put into the tank but if i do little and often water changes may be this would be ok. this would be my alternative to an ro unit.
any help / suggestions would be appriciated
