[trenac]

Diatoms are common in new setups & low light setups. It will disappear in time as the tank matures. In the meantime you can just keep it wipped off the equipment & glass. You could also employ some Otto's to help with the cleaning. Snails can also help.

I would also suggest getting some more fast growing plants in there. Instead of planting you could use some floaters like Hornwort, Red root floater, watersprite etc.

Also make sure that you are dosing ferts (micros,nitrates,phosphates,potassium) & using a carbon source like Seachem Excel or C02 injection (best choice).

 

[trenac]

Besides the above mentioned fish. A small pleco such as Clown or Bristlenose and Amano shrimp are good algae eaters. Some also use Flagfish to eat algea.

 

[trenac]

Looks very clean, nice job!