Quote:
Originally Posted by rocketlily
If you are shutting off pumps during feeding, do you have check valves for eliminating the siphoning of the return lines or do you drill siphon holes in the return lines.
Just doing the plumbing now and I want to make sure I get it right, as some of the corals do need the pumps off for feeding.
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Shutting the pumps off for feeding, power outages, whatever, should design your system to handle what might return to the sump.