I have a planted 20g tall currently with 6 Tetras. I plan on adding 6 more eventually, and being fully stocked.
My canister filter is the only flow going right now. I do weekly 20% water changes, and change out the carbon monthly, as well as rinse the rest of the canister, dumping out the old water, and starting with new tap water.
I top off with distilled water only.
I have this black 'filmy' algae that gets on some of my plants, and on some of the substrate. I siphon out as much as I can, but it still comes back. My drop checker is consistently a yellow-green, but plants are happy with the CO2, otherwise.
Would adding more flow possibly help eradicate this algae? If so, I have been looking at adding this pump. Sicce Voyager Nano Circulation and Stream Pump: Aquarium Wavemakers