D.E. Page 3 of 4 - 315w CMH/LEC vs 600w HPS - posted in Lighting and Ventilation: Id guess I ended up about 50cm, maybe a little less, with the Chinaman Hat Shade, and a bit higher with the Vertical Square Shade that came with the kit as it was a much narrower footprint, but I never actually measured it and my old man stoner memory probably isnt the most reliable thing to go off . Page 1 of 4 - 315w CMH/LEC vs 600w HPS - posted in Lighting and Ventilation: According to marketing blurb, 315w CMH lights are meant to be equivalent to a 600w HPS. I have read about 315w CMH being compared to 600w HPS lights as yielding the same but I am curious to if anyone base done side by side grows of the above mentioned lights? There are many options out there for marijuana grow lights, but what’s the difference? For my 3x3 I run a 600 watt blue mh/hps so for your 4x4 I would say the 1K watt is a good choice. Growers are moving to CMH’s because of their power per watt. I usually have a 3 tent system 1 4x4 2 5x5 tents all decent brands like mars hydro, I'll clone in 4x4 and early veg, in week 3 of veg move to a stronger light and more room and air flow. However we really do not have more info like your budget etc. With the ability to reach high temperatures, a 315w CMH light is known to outperform a 400w bulb and even some 600w’s. Fully sealed, low frequency ballast is side mounted. SunPlix 630W double ended (DE) ceramic metal halide (CMH) bulb provides full spectrum light which benefits plants growth and flowering. , which is better the hps or the cmh to create flowers? The CMH fixture can be used as a primary veg light, a primary light for SOG applications, or a supplemental full spectrum light for large flowering operations. The Best Grow Lights For Any Budget. The D.E. The Lumatek Pro CMH ballast when used with the 630w CMH d/e lamp & high output Tekken d/e reflector, promotes fast growing, high quality, bountiful harvests. With improved PAR output levels per watt, lower running costs compared to comparable HPS systems, and the peace of mind of a full 5 year Lumatek warranty. too hot for a small grow tent or will I just get better results and lower temps with cmh 630. My question is witch would work the best for my application. Ceramic Metal Halide Light Guide + Review This entry was posted on March 27, 2018 by Devin Martinez . I'm running 425cfm in line fan with with carbon scrubber and pumping in ac form a duct for cooling. Are 600w D.E. The same way these cob LEDs replace 1k lights at 600w or so, the CMH is also a much more efficient light. As I figure out the cost effectiveness of replacing a few 1000W DE HPS in the grow with some supplemental 630W CMH (for added spectra) I'd like to hear from other growers out there on their opinions. Anyways, I am planning on running 20-24 1000W DE HPS in a 1200 sq. The Lumatek Pro CMH ballast when used with the 630w CMH d/e lamp & high output Tekken d/e reflector, promotes fast growing, high quality, bountiful harvests. With improved PAR output levels per watt, lower running costs compared to comparable HPS systems, and the peace of mind of a full 5 year Lumatek warranty. Also known as, LEC or Light Emitting Ceramic, the popularity of CMH is catching up with any weed growers because of the efficiency of the light, which is especially good for crop photosynthesis. I've been preaching to all you guys for almost 1 yr now about the quality and growth of cmh vs mh/hps lights. We have talked extensively about traditional HID grow lights and LED grow light systems , but there has been a recent trend growing with a 3rd grow light system you might not know about: Light Emitting Ceramic , or CMH grow lights that utilize ceramic metal halide grow bulbs . hps and the cmh cdm lec lighting. (2) 315 CMH would do well in there too. Double that with a 630w and you’re getting almost as much power as you would with a 1000w MH light. ft warehouse. The 630 is basically 2x315cmh in 1 bulb and fixture. These new CMH are NOTHING like the old 400 watt ones. It can replace a 1000W HPS/MH bulb. I have done perpetual harvest so many times. Because of high light /power conversion ratio, this bulb gives off much less heat than HPS/MH. Hello everyone I am new to the forum, I have a serious doubt, we are planning a flowering room, in which I have about 8000w total for the light .... my question is: I put 8 hps of 1000w or 13 cmh of 630w ?