T5 Supplementation

[Parker]

On my 265 I'll be running 3ea 400W HQI with 14K Bulbs. I'll be supplementing with T5's

I have 4ea 48" T5 fixtures already:
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Halide - Halide - Halide

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Will this be enough or should I add some 36" bulb in there?

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Halide - Halide - Halide
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Or should I only run them in the front:
Halide - Halide - Halide
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Also should I run full Actinic bulbs for all T5 Bulbs"