Improves water quality while promoting the growth of beneficial bacteria A highly refined activated carbon powder mixed with several nutrients that promote the growth of beneficial nutrifying bacteria. Supplying some to the substrate and some to the water, Clear Super absorbs excess organic substances and promotes the appearance of nitrifying bacteria. Clear Super thus removes organic substances from within the aquarium and keeps the water crystal clear. Highly effective when added at the bottom of the substrate with Bacter 100.