Jason - where did you manage to find metric PVC to extend the drain line. I looked all over the place to try and find some but was never successful.

Yes the water will drain out of the feed line.
the supply pump is in the sump and is an Eheim Universal 1260. So when I power off the unit the Eheim starts first and when the RD is primed i turn on that pump.

J

Ruth I found the plumbing HERE

Jason nice looking beast...are they built to go in sump:question:

Ya BK have a full line of internal and external skimmers

J

I suppose that just means that the dragon will run dry for a few moments when power comes back on after a power failure. Within a few moments, the eheim would be pushing water into that pump so it wouldn't damage itself.