Just googled some photos of homemade manifolds. Looks easy enough. Thanks.

My other question is about the Ecoplus 7 compressor. From all I see, it should be plenty for my size pond. Apparently it's main limiting factor is the diffuser depth affecting PSI. My pond is shallow so that shouldn't be an issue. My question is, does a drop in elevation over dry land, from the compressor to the water's edge also affect the PSI?

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