kalk and carbon

[Tanman]

hi everybody, i am running a charcoal only canister. iwas wondering if i need to turn it off while i drip the kalk in? does the charcoal absorb the kalk concentration? all this stuff happens in my sump of coarse, so some of the kalk solution runs through the canister before it goes through the main tank.

thanks in advance

alex

[Aquattro]

No, you don't need to remove it.

[Chad]

On the subject of Carbon, can someone tell me the approximate length of time it takes carbon to be come a biological filter?