I have a friend using 3 of this same light over a 4X8 table but she is only running 4 plants in that space. Both lights did really well, but in the end comparing heat, density, growth, and the end product color.....yep, I love my cmh … I am thinking of running 4 - 315W CMH's made by Sunplix with Philips 4200K bulbs (14" open hoods) over a 4X8 table. Table will be trellised with 28 plants. A strong 900-700 PAR rating in the middle and an … The 315W CMH lamp ranges in coverage 3ft x 3ft - 4ft x 4ft. Grow Lights. Thoughts on 630w de cmh and distance from canopy for 600w double ended fixtures. I am in the hunt for some new lights for another 8x4 I'm adding to my house in a new room. When hanging these lights up is the distance from the reflector to the canopy is of course the main concern. The CMH 630W … Ceramic Metal Halide, or CMH for short (some refer to it as CDM), is becoming more popular in the horticulture and agriculture industry. The 630W CMH lamp coverage ranges from 5ft x 5ft - 6ft x 6ft. I am driven to these cmh … 315W LEC (CMH): 51+cm veg; 45cm+ flower; 630W LEC (CMH… For the CMH growers I thought I would share my experience from a distance from light perspective. The 630w … Between the CMH, the HPS, the LED, and the dual CMH, These are the results: The 630w Dual CMH grow light emits the most intensity out of the 4 charts. The 630w … LECs emit a substantial amount of light, so you’ll want to hang them at a safe distance. The hottest technology in energy efficient HID lighting is now available from Nanolux Technology Inc. I have been lead to believe that the 630W CMH … HOW DO THE DIMLUX EXPERT SERIES CMH GROW LIGHTS WORK? With this intensity comes heat requiring the 315W CMH light to be hung at a distance of 2ft from the canopy, and the 630W CMH hung at least 3ft distance from the canopy to cancel out the effects of the heat. When hanging up multiple lights, the distance between the fixtures/how much over-lap of light you have also needs to be considered. I have one phantom CMH in a 3x3 space. I've got 2x 6'x4' cupboards, I've just put 1 x HiPar 630W CMH in one on a light mover and 2 x HiPar 315's in the other, it will be interesting to see the results for comparison. When hanging up multiple lights, the distance between the fixtures/how much over-lap of light you have also needs to be considered. Seedling. First Time Grower. I have a 4x4' tent and run 2 x 315CMH with Phillips globes. Dont know about using the Double ended cmh bulbs in ballasts not made FOR the cmh … HOW DO THE DIMLUX EXPERT SERIES CMH GROW LIGHTS WORK? The short, compact reflector design maximizes light with 8% more light hitting the canopy and 30% more uniform light than the competition. LEC/CMH grow lights come almost exclusively in 315W and 630W, with the 315W variant being the most popular. 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