Is this brown algae? And what is the best way to get rid of it? I do 15 gallon water changes every week,my tank is 75 gallons. My flow is MP10 and Hydor EVO 1400gph also an Aqueon 1200 gph in the back of the aquarium down by the sand bed. I have Rowa phos and BRS rox8 carbon in a reactor. I feed my fish once a day,any help will work. thank you.
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