Low Pressure Air Stones
These airstones are housed in a plastic body to help protect the airstone and give a cleaner look. These airstones work well at low pressures and are ideal for backyard and koi ponds. As they also blend in will to your pond as the black body matches most lined and moulded ponds. The medium pore in these airstone maximizes low maintenance and high oxygen transfer. These 8” diameter air stones have a 3/8” barb.