Quote Originally Posted by sheist
..a few HID MHs... I wanna sspeed up the growth and make sure i get some good stuff.. ideas? questions? comments?
First I'd like to say the grow's going great, bro. And you have enough lumens right now to keep the plants going for at least a month in veg, albeit a slow one [ until you decide to up the power with a HID ]. Now, you may be hearing / reading a lot of great shit about MH, but I personally prefer HPS for the fact it's a bit more efficient, lumens per watt wise. People will say, "Well, the MH have better CRI and PAR (Photosynthetically Active Radiation) Watts." You can make up for the 2100k, 21 CRI HPS power with a couple, maybe even just one, 10.0 UVB Reptisun CFL. They're designed to give out good, healthy amounts of radiation to your reptile pets; the bulbs usually emit somewhere in the neighborhood of 10% UVB radiation and 30% UVA radiation. What will they do for your plants? In relatively recent tests, UVB radiation was found to increase the quality of the THC in many cannabis strains. When used in unison with a HPS, it'll produce tight buds that you'd expect from the HPS light coupled with the quality of bud you'd expect from an MH without needing both an HPS and MH light.