I have an eheim ecco 2232 canister filter for my 26 gallon. Does anyone have an idea on how often to replace the filter media in the canister? I'm using the eheim substrat pro that came with it..
I did a quick google search and I read a post saying:
"I also seem to remember a six month recommendation as far as switching it
out, so this is what I have always followed. I switch half of the Substrat
in each filter and never replace it all in one time."
Any suggestions or help would be appreciated.