240G Dream Tank of Frustration

[maron6977]

Originally Posted by Myka

Why is your sump almost overflowing? Where is all the back flow coming from? Did I miss it somewhere, or is the bottom of your tank blue? Leaving it bare-bottom? Plumbing looks great, and I love the spot you picked for the tank.

The sump was made & runs too high - barely enough volume when return pump shuts down . Tank runs 3/4" up overflow teeth , with return pump set on speed 4 (was set to 7 & ran approx. 1" up teeth) . Whole 6" end of tank is overflow & drain was made to empty 1/2 down when turned off .
I also had return lines set too deep in water , so that did back flow .
I did make a few adjustments , but when first turned it off ,sump filled to top , then back flowed into ato/refuge (luckily was empty) & filled 1/2 full .

Yes the bottom of the tank is blue (vinyl on outside of glass) & yes I'm leaving it bare-bottom.

Thanks