Hi,

I have a fluorescent Sunshine Garden with 4 - 48" tubes that I bought
from Charley's Greenhouse. It's about 2 years old. Tubes #3 and #4 are
very dim. The problem is not the bulbs: I replaced the bulbs with new
tubes, and they're still dim. I switched tubes #1 and #2 with tubes #3
and #4, and in positions #3 and #4, they are still dim. I'm assuming
that the problem is the ballast.

I've never replaced a ballast. Is this an easy thing to do? Are all
ballasts the same? Would I be better off just buying a whole new unit
(cost $249 new)? Charley's does not sell replacement ballasts for this
unit, and I'm not finding anything for this particular unit on the Web.

Thanks for any help.