Canister Filter Questions (size)

[Katt]

If you do go with a bristle nose pleco have some/ one nice pease of wood for him.( I just love them, damn good workers )
I used the fluval 205 on my 110L tank and it did a good job. Didn`t have strong flow, so was good for a planted tank.
just a reminder,,,don`t remover your old filter entil the new is ready, run both for a few weeks.

[FPF77]

WRT the canister - I have a magnum 350 Pro on my main tank and a Fluval 206 on my conditioning tank. The magnum is a pain in the butt to work with relative to the Fluval. I hate how hard it is to disconnect the lines and re-align the lid. I also don't like the media chamber. There is only one, and its cumbersome to work with. I actually dislike it so much I'm going to retire it in favor of a Fluval 406.

Agree with the others re canister size. One rated for 2x your aquarium is good. I always run two filters, which combined are rated for 3x my aquarium size.

Sunlight is like steroids for algae.

[Cermet]

If you are having algae issues, most often this is due to imbalance issues - light or nutrients with the later the more common. Check you nitrate and phosphate levels. Be sure your lights have enough intensity and are the correct color temperature. A biological filter will not do anything relative to these issues.