Join Date: Jan 2004
Location: Ontario, Canada
As I read it, your new lights are 24" and can't sit down as low as your old ones due to the cabinet being 24" OD.
I don't know what difference the 8" might make.
Taking another approach, are you opposed to modifying the cabinet?
Cut some off the top.
Or raise the tank using one of the discarded shelves and good solid spacers underneath.