I planned on getting a new ballast for the new tank cause I assumed the one I have which is for the 48' 54w lamps couldn't run the 24' 39w T-5 lamps. So I e-mailed HelloLights and they told me that the ballast I have can run the 36'' 39w T-5 lamp and I would have to get a new ballast cause it will over drive them and burn out premature......Here is the question: If it can run the 39w T-5 without issue why would it not be able to run the same watt bulb but 12'' shorter version? Does that 12'' make that big a difference? As long as they are the same wattage why would the 24''s be any different then the 36''.....Any advice or ideas? Cause if I don't have to spend the cash on a new ballast, lamps, reflectors that would be great. They didn't say how premature the bulbs would burn out though just like 30% or so sooner....?
James
James