Sativied
Well-Known Member
I just looked up a post from that whazzup guy I mentioned a couple of times - will roughly translate some comments he made about the CMH (they tested them years ago). I'm sure this guy like all humans makes mistakes, but he's a real horticulture lighting expert and mj grower/breeder.
Note this is about the CDM315... unless mentioned otherwise.
"It is already a much better lamp than an MH because it's more stable in several ways and the spectrum is also much better than MH"
"Do not expect UV from this lamp, the glass is UV-block." (based on the pdf above, it's still double that of hps, but not like T5... could be difference with elite series or something)
"Initially phillips did not plan to release the bulb in europe because the 942 (4200K) gives a better spectrum."
"To get the same amount of micromoles as a 1000watt you need 4 of them, which makes the plasma still interesting."
"Tests comparing the CDM/HPS to HPS+plasma showed the latter produced better quality" (could be entire subjective...)
"Plasma/HPS is a much cooler option" (temps, although I have to say those plasma looking very cool.
"It's not philips who says it's a plasma replacer, but a competitor who doesn't sell plasma" (he does mention it can be used as a cheaper alternative)
"Micromole-wise, umol/W, the elite agro wins, 1.9umol opposed to 1.1 for the plasma"
"In short, interesting for small spaces, I would use the (somewhat less efficient) 942 for veg or supplemental lighting" (phillips however specifically put more red in the agro versions).
"It will never become the primary light" (somewhat grabbed out of context, it may not be true for improved versions).
I have apart from the hood a 400w and a 600w set, magnetic ballasts, I could easily turn on that 400watt for some hours a day... Need to get new hps first and a shit load of other things... expensive hobby if you don't sell the harvest.
Last edited:
