Should I use MH at veg and HPS during flowering?

Hey just a basic question to the pro's, should I use MH during vegetative growth period, and switch to HPS when flowering period starts?

Or should I just use the HPS throughout the entire growth cycles, since there is max output with that?

I was also looking in to a LED setup but not quite sure if it covers all aspects of needed lighting.

Any and all help is appreciated!

A Metal Halide bulb in the 5000k-6500K.. kelvin, color temp range will reduce the stretching of plants.
A HPS bulb will let the plants stretch more, but is fine for vegging too. Most HPS bulbs are in the 2000k-2700k...kelvin, color temp range.

I've used both... use, whatever is easiest, for your situation...the KISS principle...:thumbsup:

I use 6500k High Output T-5's, now...for vegging

This is what I will be using, in a closet space of 3 x 2 x 10 obviously going to have fans blowing in and one out to keep temps down.

600 Watt Digital Ballast HPS MH Grow Light 600W System - eBay (item 330435406871 end time May-26-10 17:02:35 PDT)


Thanks for the reply Dutch