Anyone use actinic supplementation with 400W MHs?

[Reefer Rob]

Anyone using actinic supplementation with 400W metal halide lights. So far I've only had my T5s come on in the morning and evening for dawn/dusk, but with my new MH bulbs I'd like a touch more blue. I have 2- 56W Actinic Plus T5s, and I can't see any difference at all when I turn them on with my halides on. Would a true actinic bulb show up at all, or are 400W lights too strong for supplementation? I don't want to waist $60 on actinic bulbs if they won't do anything.

Thanks
Rob