A whole canister for such a small tank ? :huh:
PF I believe is "Power Filter"
Personally, I wouldn't do the UGF thing.....I find them to be more of a pain than a help...but, to each his/her own..
I find the bio-wheel filters to be excellent and more than worth thier cost. The only prob I have with them is the filters they sell for them..you can't just replace the carbon/media...you have to buy all new filters. Of course that can be remedied by using media filter bags instead.
Go for the bigger size if you can....you know you will later anyway !!
Decide what types of fish you want and go from there...might check your PH and hardness and research which types of fish would prefer your type of parameters. Makes everything much much simpler and your fish will most likely fair better in the long run. :dive2:
Go for it and enjoy the experience !! Share with us here what you eventually come up with...we'd love to see it ! :dance: