Hello,
I'm new in scrubbing have a scrubber about month already, but it still grows only green/brown slimy stuff.
The nitrate are good keep them about 2ppm. The tank is a 66g and have only one pink tail trigger. It will have in future 3-4 more agressive feeding fishes with size about 14-16sm.
The scrubber have 900l/h pump and 26w CFL/2700k. running 18/6h shedule.
Here is a picture after 3 days running I clean it every 3 days :