Matala Hakko Self-Weighted Diffuser Discs Atlantic Water Gardens The Oase Spiral Brush are

The Oase Spiral Brush are ideal for maintaining ideal water quality and clarity

Included diffuser plates and foam can be used with GFO and other fine filter media

30 foot power cord

Algae Defense® is not recommended in ponds with koi

Matala Hakko Self-Weighted Diffuser Discs Atlantic Water Gardens The Oase Spiral Brush areMatala Hakko Self Weighted Disc Diffusers are EPDM air diffuser assemblies that feature weighted bases that help keep the diffusers anchored to the bottom and right side up. We recommend the MD 3W up to 7LPM, MD 5W up to 25 LPM, and the MD 7W to 40 liters of air per minute. Produces medium bubbles, reducing back pressure on the pump SKU Membrane Diameter Connection Net Weight MD 3W Silicone 3" 3 16" 0. 47lb MD 5W EPDM 5" 3 8" 2. 36lb MD 7W 7" 3 8" 3.