All the info I've seen a 630 cmh does indeed perform as well as a SE hps. It has a umol/j output better than any hps. The same way these cob LEDs replace 1k lights at 600w or so, the CMH is also a much more efficient light. These new CMH are NOTHING like the old 400 watt ones. Again the umol/j output is much better on the new ones, the spectrum is far better on the agro or red enhanced bulbs. No offence but I feel like a lot of you are throwing out comments and you have no idea what you're talking about in this case. I see the well known member tag and I know my name is new here so put me down as you will but there is a ton of inaccurate info in this thread. No way it would take 2 630s to outperform a gavita. I wouldn't be surprised if you could match a DE with 945w cmh. Plus youd have less heat being that the CMH is more efficient than the DE hps, more of its energy goes to light than heat compared to SE or DE hps. Shit there is side by side videos proving they are better than hps. SLide over to ICmag and check out hammerheads stuff with the DE 630s. They are killing it
The fact is you would need at least 2 630 watts to out perform the 1000w (Gavita comes to mind). Or 3 315s as OldMed says this technology is not new, however, this is true but there have been significant advances in power consumption and ways the heat is vented. In other words, save your money and just buy one gavita or an Epap. I am a big fan of dimlux
