Par levels per bulb for ATI

[GHOSTLY]

Just to save money during the holidays ive settled on a purple plus t5 from ati. Does anyone have an idea on the per bulb par levels that t5s can give? Ive got it running on a sunblaster 24in t5ho with a reflector alongside a radion g4. t5 is being used to help with some shaded spots (i know purple+ shouldn't be used alone but no one locally carries coral+)

 

[GHOSTLY]

Just to save money during the holidays ive settled on a purple plus t5 from ati. Does anyone have an idea on the per bulb par levels that t5s can give? Ive got it running on a sunblaster 24in t5ho with a reflector alongside a radion g4. t5 is being used to help with some shaded spots (i know purple+ shouldn't be used alone but no one locally carries coral+)

Side question since I haven't started the light yet. How much should I dial back my main light with the addition of 1 t5