Yeah unfortunately there are no threads on either the pump inlet or outlet. What size drill bits do I need to use to make the inlet/outlet of the res? Iwakiwalchem.com says that the MD-30RZ uses 5/8'' hose with 3/4'' NPTM. I'm not entirely sure what that means.
Last edited by Moony; 07-24-2004 at 07:44 AM.
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