I have a 55g with marine fish only , Humma , three damsels , though I had an algae bloom , water is cloudy with a tint of brown, did algae treatment two days ago , didn't clear up with three over the back filters running it wasn't helping , as a hunch I turned off lights and stopped filters to see if it would at least settle, after two hours, I turned on the light to find the glass covered in tiny white bug like creatures, and the tank is full , what do I have and what can I do