My design does allow the refugium to overflow into the sump (no pump required). I have a feeling that some of the pods do survive the trip up as my mandarin hangs out right by the return pump outlet most of the day (I use a Poseidon as well). I have seen some designs that incorporates a 5-10 gallon fuge above the main tank so that the pods don't have to go through a pump on the way to the display tank. My understanding is the above the tank fuge just needs to be slightly higher than the DT for it to work.
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Originally Posted by Myka
Ya, thanks! I got them. My idea is kinda like your idea, but I want the refugium to overflow into the sump instead of being pumped in hopes that more pods would make the trip back up to the display...not sure they'll survive the Poseidon return pump though!
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