I have started my scrubber 10 days back with 20 w x 2 bulbs done my first cleaning. I am getting brown layer on screen no green yet, is this normal? as i am doing daily water changes is the problem because of that or it is normal course of algae starting time?
Tank 50 gallon
scrubber size 7 inch x 7inch
water flow approx 1200 lit/hr
deepesh