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Non-drilled closed-loop?


andy

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I'm thinking about ditching my mjmod and seio, replacing them with a closed-loop (Oceans-motion). Right now, my tank is drilled for sump drain and return only, no holes for CL drain or returns so ideally I'd find a way to plumb it without holes. Drilling a drain hole is possible (drain tank to ~25%, drill from the inside) but I'd rather avoid it.

 

Of course the return is the easy part, just plumb lines off of the OM using PVC and locline through the top holes in the eurobracing... the tough part is the drain. I'd like to avoid any kind of siphon or manual priming scheme if possible, but I'm not sure I'll be able to. I don't remember seeing any self-priming pumps out there. Any ideas?

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