Right now I've got two bar LED's that don't fit very well on top of my 125g and I've been thinking of moving to a puck type light and mounting it by an arm. I currently have glass tops rather than mesh, there are five cats in my house and a couple are rather large. This is for a FOWLR so I'm not worried about coral growth, but light for the fish and to make everything look good. Does anyone notice a decline in how the water, fish, etc look when mounting lights so far away from the glass as opposed to super close with bar lights?