Hi, I'm a new reefer and it's my first tank so not sure what to do - my tank is about a year and half old and since the beginning I was having all kinds of algae and not too much coral grow. All test where fine - zero phosphates, zero nitrates and the corals where struggling while algae didn't care. Couple month ago I decided to try "kiss" approach - removed all chemical filtration, turned off reactors and left only skimmer. Immediately I saw a lot of coral grow - SPS got nice colors, zoas started to grow etc. As well as algae - I have a lot of hair algae and something strong that might be bryopsis (it doesn't look like a feather but strong and think compare to regular hair algae), some cyano etc. The last test showed 0.04-0.08ppm PO4 and zero nitrates. Now I'm wondering what to do to get rid of algae - add some nitrates (I have potassium nitrate from planted tank past), turn on GFO reactor with a little GFO or something else? The algae is really ugly, but I don't want to stress corals too much either by limiting nutrients.