Aquascape® BioBalls™ Contractor Pack, 1000 Pieces Accessory you would stand behind the

you would stand behind the skimmer (looking out over the pond)

Excellent resistance to fouling in hard water environments

If pond water is turbid

ORF10OR 10" O-Ring for ATCLR10 Lid ~10" Dia

Back-flush waste line has clear section to monitor cleaning cycle

Aquascape® BioBalls™ Contractor Pack, 1000 Pieces Accessory you would stand behind theAquascape BioBalls provide a textured surface area (19 square inches each) for beneficial bacteria to colonize and grow, making Aquascape BioBalls the ideal filtration media for use in biological filtration systems. Features: Center channel allows the balls to be strung together making cleaning easier Textured surface maximizes space for beneficial bacteria populations Design maximizes dissolved oxygen levels and helps with gas removal Compact size