i use nylon mesh 40 ( didnt rough it) n it was very bad :cry: no green hair algae, and the algae so thin.. when clean it, almost nothing come off, only the water turn green..
this is the screen after i cleaned it, anyway it was almost the same be4 i cleaned it ops:
i use 1x CFL 23W ( the middle part algae obviously got burn), and the flow, coming from return MT