Hi right now I have two Kessil 160 with goosenecks attached and it's not enough lighting. I removed the glass and have a hard plastic mesh with 1&1/2 squares. Any suggestions would be more than terrific!!!
I have a Kessil a160we over my 41g 24" deep tank and it is perfect. What size is your corner? Part of your problem could be your cover. If you are using the egg crate it will vastly hurt the light output from a Kessil. It's possible that if you have a larger corner tank you could need a third in a triangle configuration if its like a 90g corner.