ok, I have emptied the 37 and have the 120 in it's near-final form.
I am having some issues with loud overflows/drains. It may be that I have too high return but i doubt it. I am running two mag 5s as returns, and one has a ball valve I can dial back. I have the adjustable durso standpipes (purchased commercially I believe) and my drains are 1" flex tubing to the sump.
Should the drains end just undet the water surface, deep underwater, or above the surface??
When I run only 1 Mag it's whisper quiet, when I run two, I get bubbling in the sump
Thanks