I just bought an 150g (72x29x18) tank, they had it set up as a peninsula style tank and have a hole drilled on the right side of the tank. The hole that is drilled is only 3/4" wide. I am planning on capping/sealing this hole and drill through the back, I was thinking of possibly doing a herbie style overflow, but wanted to get other opinions/suggestions. Please let me know what you think, Thanks.