I just upgraded my lighting and when I went to the fish store to purchase the Ice Cap 430 2x5' vho kit, they gave me an A4 ballast instead. I called them up when I got home and the guy told me that I was upgraded to an A4 because that is "this months special." He said it is the same as an Ice Cap 660 but that I could run more bulbs with it then the 430. Cool, so I wired it up and then found out that the A4 is only for VHO and can't run the T5 or PC lights. Is that true? Are there any other differences? If I demand a IC 430 is the wiring harness the same as that of the A4? I hate to have to rewire everything. I'm thinking that the A4 is a lesser ballast and that I got scammed. When the included VHO lamps are used up I was gonna try T5. If they are the same then no harm done. Thank you