Matala Hakko Self-Weighted Diffuser Discs Size:7" Diameter Available in the following media

Available in the following media types:

4oz 780 Square Feet 29313 827807293134 7lb 2275 Square Feet

Size UPC Code Treatment Area 4oz Bale 855938000017 500 Gallons (3) 4oz Bales 855938000024 1

and the internal thermostat will turn the unit off and on as needed

Matala Hakko Self-Weighted Diffuser Discs Size:7" Diameter Available in the following mediaMatala 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.