Hey Paulie,
Yeah that Dart is awesome. In one of the outputs I get whirl-winds? Basically a water tornado that sucks air into the tank causing a billion bubbles. Any time I tweak the loc line it takes me about 15 minutes to fix it.
My sump is running 40+ gallons when full I would say. I have a small overflow so Im not worried about floods if I lose power.
Don't copy my plumbing whatever you do. The only regret I have with my tank is the plumbing. The overflow is great, you can't hear anything.
The return and closed loop...ugh.
My return has way too many elbows which hinder the flow. It is also all 1/2" PVC which I found out afterwards isn't right. I should have gone with 3/4". I'm also getting awful flow thru the fuge and have it plumbed with-out enough disconnects to be able to plumb in my Carbon/Phosban reactors that I hope to get soon properly.
The closed loop is a mess. I used Spaflex for the 1 1/2" output but not for the 1/2" outputs. This caused the need for several more elbows. This caused the "tower" return to bend on an angle which I think looks awful. Since my return was made first, I had to work around it and therefore had to have it go verticle as opposed to horizontal.
Also, all my valves are "red handle" ball valves. They are a ***** to adjust, and I hear the black handle ones are better. I would have liked to have gone with them.
Later tonight I will snap a few shots of my tank and post them. I just picked up a Yellow Tang last night. A little cliche' I know, but it's a hardy fish, good size for a 75 gallon and although common they are a great looking fish!