Alumina Airstone Diffusers by Easy Pro Lake & Pond Supplies_Predator Control the water is diffused by

the water is diffused by strategically positioned internal barriers

providing a wide variety of options for your personal lighting needs

reduce pond turnover

Two 30-pound weights or concrete blocks required for anchoring (not included)

This versatile system can be installed on decks

Alumina Airstone Diffusers by Easy Pro Lake & Pond Supplies_Predator Control the water is diffused byAlumina air stones three times stronger than white silica air stones! Produces a finer bubble with no increase in pressure. Inlet fittings are set into the body of the diffuser, making them much less likely to break or twist loose. Higher density means self weighting Cleanable with muriatic acid or chlorine More resistant to ozone Multiple Sizes available