Hi there ,
i'm nt sure if the ballast or tubes can handle the extra watt driven by the ballast or the other way around.
For High Output , u'll need
a T5 ballast(nt cheap) , or a E-ballast
reflector , can be frm aquaZ , DE , HV. check the sponsors forum
so far aquaz tubes r the most affordable ones ard.
i'm also using T5 on my tank ,nt using chiller.
usually ard 29-30 deg c , but it dosnt really contribute to the heat factor
other than that u'll need the norms like cables , 3 pin plug , end caps
have fun DIY-ing