Running 24" and 36" t5 off same ballast?

[USC-fan]

Is this possible?

i'm looking that the dimmable ATi ballast.

Have searched and only found this searching

http://www.reefcentral.com/forums/showpost.php?p=11240456&postcount=5
Has anyone tried running 2 different size of bulbs on 1 ballast? I'm thinking of running one 48" and one 36". Would that be bad for the ballast or bulbs?

You could likely do it with an Ice Cap or mixing 24 and 39 watt lamps on the ballasts that are desinged to run 24 or 39 watt lamps.

[jedimasterben]

The HEP ballasts are made to run one or the other, not both simultaneously.