Matala Hakko Air Diffusers with Included Base Diffuser Type:MDB22 (Large Base / Two 9" Diffusers) 5" - 3" 1000 10

5" - 3" 1000 10

Pulls debris from the bottom of the pond

EasyPro Bottom Drain Kits include the aforementioned bottom drain

Features 3/4" FPT threads in both ends

Matala Hakko Air Diffusers with Included Base Diffuser Type:MDB22 (Large Base / Two 9" Diffusers) 5" - 3" 1000 10Matala Hakko Base Air Diffusers are membrane air diffuser assemblies that feature heavy duty plastic bases with soft edges. These bases are hollow so that they can be filled with sand or gravel, eliminating the need for bricks and straps to get the diffuser to sink. Two sizes of bases are offered: the small base can accommodate one or two diffusers, and the large base can accommodate two or four diffusers. Heavy duty diffusers produce medium bubbles,