HOB filters usually provide the most filtration for the money.
If you're injecting CO2 on this tank, canister filters won't outgas CO2 like most HOB filters will, and also can be used to distribute the CO2 into the tank. They're usually the most expensive, though.
Sponge filters are the cheapest option by far- but still very effective.
If you're injecting CO2 on this tank, canister filters won't outgas CO2 like most HOB filters will, and also can be used to distribute the CO2 into the tank. They're usually the most expensive, though.
Sponge filters are the cheapest option by far- but still very effective.