If your tank is planted and you inject CO2
, or if you just want to have greater filtration flexibility, it might make sense for you to get a canister filter. I found that switching from a Penguin BIO-Wheel 330 HOB
filter to a Filstar xP1 canister greatly increased my plant growth because there was less disturbance of the water surface (and therefore greater retention of the CO2
I was injecting). I also switched from submersible heaters to an external heater (the Hydor ETH 201) which left the tank less cluttered.