Suppliment Halide's with LED's

[Lampshade]

24's LED's comparing to a 400W was a bad example, the AI has the same par, but nowhere near the spread using 16 XPG's and 8 blues.

The a reason i was thinking white was because the Halide already have a huge peak in the blue range, so the white LED's would spread out the light spectrum a bit more. After looking into it, the blues seem to have a very high par reading as well, i didn't expect that at all. I'll look into it a bit more.

As for optics I was wondering why not to use them? everywhere I've read shows that optics greatly increase the usable light, any reason not to?