I've started my FOWLR
build and here's what I have so.
CPR Bakpak HOB
I also have an Eheim Canister from my first sw
tank from years ago and I've read a lot of commentary on the forum in terms of nitrate build ups in the canisters. It's a pain to clean out and I don't want to do it every water change. So would it be best to shut it down or can I put in LR
rubble and just let it run? or Should I replace it with a HOB