^&right
Community Member
- Joined
- Feb 19, 2026
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- Location
- Indiana
- What state or country do you live in
- Indiana
This may sound dumb, but research here and at Neptunes forums hasn't yielded anything 
Even the instructions manual is no help. The instructions allude to PVC but nothing fits! 11/4" is mentioned but that size PVC does not fit!
Settung up a COR 15 pump and I don't know what kind of line to use. The return nozzle retention nut isn't sized for standard PVC, or 1" flexible nylon tubing I thought was it. Local store only has up to 3/4 Pex. Bulk reef supply is closed for the day.
Please help!
Even the instructions manual is no help. The instructions allude to PVC but nothing fits! 11/4" is mentioned but that size PVC does not fit!Settung up a COR 15 pump and I don't know what kind of line to use. The return nozzle retention nut isn't sized for standard PVC, or 1" flexible nylon tubing I thought was it. Local store only has up to 3/4 Pex. Bulk reef supply is closed for the day.
Please help!
