I have this problem with algae in my tank, mainly a green algae that grows on the rocks and a green/brown slimy sheet algae that grows on the glass. I have been using RO
water for around 8 months now and the algae is still there. My tank always has higher nitrate levels also(don't know an exact number off the top of my head but I know its on the upper end). I feed my fish formula frozen cubes for dwarf angels usually by just breaking them in two and putting them in the water every other day...I was reading some posts about liquid that is in the frozen food that can cause high phosphates.
My three questions are, do you think my feeding habits could be contributing to some of the algae growth?
Are the high nitrates a result of the algae growth?(my nitrite and ammonia are zero)
Any ideas on what I can change or adjust to lower the amount of algae?