So I had my surf 4 on my old 120G tank and only had cyano growing in it. Then moved it over to my new 300G have some green growth going on but also getting some cyano growing to. Been on new tank for 3 weeks now. ATS is on a timer for 18 hours a day only running half leds then turned all leds on. Air is on 24/7, you can still see some white in scrubber and green growth is differen on the sides as it is on the strings. Plus getting algae growing in DT on one rock plus on the glass.