Well... I added water today to the sump, fired up the pump and found 1 leak on my return line, prolly due to a lack of teflon tape, so I picked up a hose clamp and the problem is gone.
It a bit cloudy cuz I had to add the sand back into the tank, and still got a bit more to add, now that I can sorta see where more is needed... lol
Anyways.. I got flow and its set perfect right now. No fluctuation in the overflow height.
