If you have a planted tank, you'll want to keep water surface movement down to a minimum for CO2 retention. A sponge filter does this beautifully.Originally posted by yhbae
Aha... I'll have to keep this in mind when I eventually get to some seriously planted tanks... (I always like to have some additional filtering, "just in case"...) Thanks for the info guys!![]()
Check my tank specs below. I use a sponge filter (impeller driven, not air driven) as a prefilter to a RFUGF on 1/3 of my 30g planted tank. Works terrific!