I have a 240 gallon tank with an Exotic Marine Systems overflow. I believe the tank builder installed the overflow a fraction of an inch to high. As a result the water level in my tank is super close to the top especially with MP40s moving water around and some water trickles out each day. It runs down the back and sides of the tank. It’s only a few ML a day but it’s very frustrating. The water runs down gets between the black bracing and the glass and I end up with salt creep all along the bracing. Any suggestions on how I can fix this issue?