I was leaning towards a canistar filter but most of the filter is for bio filtration which isn't need for a planted tank. I want to add CO2 DIY and avoid CO2 losses to that atmosphere. Fluvals seem affordable, are they any good? Eheim has their old shool models and the new Ecco models. The new ecco models are cheaper, are they junk? What about Rena Filstar's they are in the middle price wise I was also looking at power filters and foam filters? Aquaclear power filter Powerhead (under water) and foam block The tank will be anywhere from 29-35 gallon tank.