HPS will give denser buds and better yield, but more stretch.
If you are lucky enough to own a switchy, stay on MH until the end of week 2 flowering to reduce stretch, then switch to HPS to build bud mass.

I don't know that particular type of light, sorry.
stinkyattic Reviewed by stinkyattic on . Hilux dual core hybrid HIDs Anyone have experience with one of the "dual core" HPS/MH hybrids? HiLux Gro - Grow Light - Horticulture - USHIO I have been using a 1kW MH (in a switchable ballast) for flowering b/c that is what I had available but now I started looking at getting an HPS bulb. From what I have read it will give me nicer buds, but the plants will be smaller(density wise)/stretchier. Then I found this bulb and it looks like it might be a magic bullet in terms of spectrum. Thoughts? Rating: 5