Can I ask where these weir panels are installed? Inside or outside of the tank? Why did you install these rather than increasing the rock wall?
I did an in-tank coast-to-coast overflow. The rock wall is beneath it, and the camouflage panels are siliconed inside the tank to the overflow weir. If I had it all to do over again, I would do an external overflow and bring the rock wall right up beneath the overflow slots due to the ugly (in my opinion) transition between the rockwall and weir, and also the several inches of front-to-back space that the internal overflow takes up inside the tank.