Ok, so I have filled up my tank and my sump... it has about 1 1/2 inches of gap from over flowing. All water runs smoothly, but I have a few concerns. I'd like to see if anyone can help answer these concerns of mine:
#1 - When I have the return pump running it seems as though my water level keeps rising... not much, but about a cm after 10 or 15 minutes... I turn it off eventually because I fear it will overflow the actual DT... is this possible and a cause for concern or will it stay level at a specific point?
#2 - As I said I've tested the "What if" situation... being what if the power were to go out. Water drains from the pipes and the overflow as well as drains down the return pipe from the DT until it reaches close to the center of the return heads... after that, I can't see any further drain that is noticable to the eye. Will it slowly continue to drain until the return heads are no longer submerged at all, or will it stop once air is introduced into the pipe? Again, the heads are on a pipe that goes directly down into the sump, so I was under the impression that water will drain (as gravity will force it to) until the heads no longer have any contact with water.
Aside from that, everything else seems to be working... the skimmer is another small concern though... it only fills up half way and doesn't have any foam reaching the canister. Should I leave it running for a few hours and it will eventually make it's way up there or am I doing something wrong with this?
Thank you all for your help... the sooner you can respond to questions 1 and 2 the sooner I can get to sleep.