Robust-Aire diffusers are the most efficient on the market and create more water flow to aerate your pond. Diffusers are designed to provide a fine air bubble with the least amount of pressure.

• Membrane air diffuser assembly that features a Heavy Duty HDP (High Density Plastic) hollow base that can be filled with sand or gravel.
• Eliminates the need for bricks and straps to get the diffuser to sink!
• It has a raised design that keeps the diffusers performing at an optimal level above the pond bottom.
• Quad tubular Designed Diffusers handles airflow from 3 -15 cfm.
• 3/4" female threaded outlet located in the base of each diffuser, 3/8" & 5/8" barbed tubing adapter included
• A durable, bolted,strain relief attachment insures that the weighted tubing will not become detached during installation or maintenance. A check valve with Viton seals keeps water from entering the tubing when the system is not operating.
• Can be used on existing pond aeration systems as well.