BROWN ALGAE ON MY SAND
I have a 90 g mixed reef and for the past 2 to 3 months i been fighting this brown algae on my sand bed ..is not diatoms ! I do water change every 2 weeks ((30 gallons) . I run gfo .carbon in dual reactor .also have a cascada diy ats on my sump with ligjts runing 16 hours .opocite to my main lights i vacum it and on 2 days it come back . My sand is 2” dip
My lights are 2 hydras 52 non hd thats go on at 8:30 am and reach max output at 11:30 to 6 :00 pm when start sun set .
White light runs 22%
Royal blue at 85%
Blue 65%
Green and red @ 7%
Also have 4 t5’s that go on at 11:40 to 5:40 pm 3 blue+ and 1 super actinic
Any ideas ?
I have a 90 g mixed reef and for the past 2 to 3 months i been fighting this brown algae on my sand bed ..is not diatoms ! I do water change every 2 weeks ((30 gallons) . I run gfo .carbon in dual reactor .also have a cascada diy ats on my sump with ligjts runing 16 hours .opocite to my main lights i vacum it and on 2 days it come back . My sand is 2” dip
My lights are 2 hydras 52 non hd thats go on at 8:30 am and reach max output at 11:30 to 6 :00 pm when start sun set .
White light runs 22%
Royal blue at 85%
Blue 65%
Green and red @ 7%
Also have 4 t5’s that go on at 11:40 to 5:40 pm 3 blue+ and 1 super actinic
Any ideas ?