If you have DIY skills, you can make a manifold out of PVC pipe with 3./4" FIP fittings to screw in Vertex diffusers and attach that to your gravel filled base.

If you really like what you have, then I suggest you contact Kasco to purchase replacements. I have Vertex diffusers in the pond that are more than twice your Kasco diffusers age and they are still working without any problems. The Vertex membrane diffusers are warranted for 5 years from date of purchase.


www.hoosierpondpros.com

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).