Hello,
i have brown algae problem for 1 year now, please see video.
freshwater aquarium with brown alage - YouTube
My aquarium is 240 litres (60 gal), 2x 54w T5, 2 x inside filter, no CO2, liquid fertilizer dennerle, 26,5C, ph 7.6, I do water changes 50% every 3 weeks.
The aquarium is full...