I've had a canister on my cichlid tank for about 2 years now. I've just got two more for my other tanks - I like the idea of bio in the canisters with cleaning every 3 months, and a HOB
with sponge/pads/floss that I rinse weekly with my PWC
Anyway, I'm wondering if just rinsing my bio media (I use Eheim mech / substrat pro) in tank water is enough, or if it needs to be cleaned/recharged eventually to unclog the pores. Eheim suggests replacing half the substrat pro every 6 months - that's not going to happen at those prices, but I do want it to be as efficient as possible.