Currently I have a 100w CF Grow light sort of clumsily hung above my 29 gallon sump (specifically over the middle chamber, which is my refugium of about 10 gallons). It's not very even. It bleeds a ton of light. I'd rather have something else that is easier to set up/point towards my chaeto ball and has less bleed, since my sump is only partly covered and there's a good enough of light leaking out of/around it. Any advice?