Black Brush Algae (BBA) is one of the most common and frustrating algae problems in freshwater aquariums. It appears as dark black, grey, or reddish-black fuzzy patches on aquarium plants, rocks, driftwood, filters, and decorations. Black Brush Algae can make your aquarium look dirty and affect the appearance of your aquascape. Although it is difficult to remove once established, the right aquarium maintenance routine can help control and prevent its growth. In this guide, le
