With the 3x 600w HPS we averaged about 1.1g/watt. There are 2 plants in each, I run each room under 400w HPS(flower)/MH(veg) and both are scrogged. Running a 250 HID vs 250 LED would be silly, LED will win. So I’m trying to maximize my two flowering plants. 3,100K and 4,200K CMH lamps both emit a spectrum capable for growing plants full-cycle (veg through flower). I'd like to see a side by side with the 315 … Living in Vermont my plant count is 2 flowering 4 veg. Hey guys , updating my grow going a bit bigger for this next run i have currently 1 200w(400 true watt) blurple led and 1 600w hps. JavaScript is disabled. Double that with a 630w and you’re getting almost as much power as you would with a 1000w MH light. I ran 3 315 in a 3x9 got 2.75lb at my best 2.25 at worst I was using the nanolux 315 vertical fixtures you have to get the plants super close to yield well I was running 18 5gal airports per 3x9. There are 2 plants in each, I run each room under 400w HPS… Quality leds do yield close to the same as hps and cmh but everything is subject to the basics 1. This system will not accept Mogul Base lamps or CMH lamps that are not rated for open fixture use. These two lights feature the same bulb and technology, just under different names. Each had an over growth of leaf material. The plants grow more compact and leafier with cmh. Hortilux uses a glass that allows the UV light to pass through benefiting plant growth. Strain 3. With the CMH it seemed superior in every way to except light intensity and doing the 630s solves that. Strain 3. With the ability to reach high temperatures, a 315w CMH light is known to outperform a 400w bulb and even some 600w’s. My reasoning for liking the LEC more is because of a few factors. which one would be better for flowering a 315 LEC or a 600 watt HPS? Each used to be operated by 5 x 1000W HPS grow lights, a total of 60 x 1000 HPS. Ceramic metal halides (CMH), or Light emitting ceramic (LEC). I’m leaning towards a double ended 1000 watt dimmed to 750 in a 4x4. I’m jumping on the CMH train and plan on using a 315 for each 3×3 space and hung 18” over the canopy as they don’t get nearly as hot and the only negative compared with HPS in my experience is the light penetration so hopefully hanging them lower will remedy that issue. So i have a 315 CMH and a 250 HPS. 315W is the most popular size for LECs/CMH grow lights. Or the 630 watt cmh. I’ve been growing for about 5 years now and would love your advice on an upgrade I am contemplating.. I was worried about how much Red was in this spectrum for flowering. Ok, so here's the rub..a single 315w CDM grow light will not yield as high as a 600w HPS grow light and so you will need to purchase two CDM's as a swap-out for a single 600w HPS grow light, but as with many things in an ever demanding world, quality usually has a higher worth, and so the cost outlay of upgrading your lighting equipment should be negated by the worth of a quality increase! And I have also done tests not scientific tests but I have placed plants in my tent with the 600 watt hps and then had plants in my smaller tent with 400 watt MH. Grower experience 2. I do know growershouse sells them for 420 for the complete kit. It’ll be a little more money up front but you will be glad you spent it. I am currently running a cabinet grow which has a veg and a flower section. The HPS produced the yield, while the MH lamp provided blue light and some UV, which encouraged terpene & essential oil production. The buds are denser, the oil production from the plant is off the charts and the terpene profile is way stronger. Philips 315w CDM Elite (CMH) - Overview & Information © 2021 Dude Grows LLC || MADE WITH GROWERS' IN COLORADO. HID are less efficient, that's not even debatable. Posted by DankBudsman | May 2, 2017 | Grower Questions | 7 |. Co2 added I think The info you give is False hope for someone to say hey this amazon led is 100.00 it’ll out perform a 150 vivosun cmh 315 with a Philips bulb and I’m sorry that’ll never happen. Im going with a 630 duel bulb LEC with a mixed K spectrum for 1st half of flower and switching to duel 3k bulbs for 2nd half. With the CMH we averaged 1.15-1.23g/watt. You can get the same yields or close to than with a 600W easily. HID are less efficient, that's not even debatable. My process is pretty simple; I run drain to waste on a drip system, which is on a timer, into 7gal buckets with a 70/30 coco/perlite mix. Putting CMH Grow Lights to the Test You can replace the bulb with high quality grow bulbs that have a slightly redder (3100K) or bluer spectrum (4000K). You must log in or register to reply here. Tags: Ceramic Metal Halide cmh 315 315W phillips Categories: Comparison Tests HPS/MH Lighting CMH Time: 9 Minute Read Date: Jul 21, 2016 Author: Staff @Growershouse ← PREVIOUS PLS 315W Ceramic Metal Halide CMH Grow Light Conversion Kit Unboxing & Review Has very high red spectrum but has an 80 Cruz and looks more like daylight . 20,000 hours with and only losing 15% efficiency vs a 600w hps lasting 24,000 hours but losing 30% efficiency. This is one of the reasons why blurple spectrum is terrible for flowering and taller plants in general. I hear you making this "blue for more leaves, red for more flowers" argument a lot. As B Patient mentioned your grow space may be important in this decision. It’s the red to blue ratio. I have been wondering the same thing. Red is actually counterproductive in that respect while amber and far-red help to lower the R:FR ratio. Try and match up recommended footprints rather than wattage. Also each tent had the same genetics but not from clone just from seed, so the plants could have attributed different traits... that’s why I can’t say it was very scientific lol. That’s some power ! If you’re going 4×4 or larger, look into the 630w double light LEC fixtures, OR, drop on into the Google Hangouts DGC chat, there’s a few of us (ahem, MO…) That may or may not be able to help you get going, and fall in love with the LED revolution. Each room is 4’x4’x6′. Basically you need to replace a hps 600w bulb twice as much as a cmh 315w bulb (at around 15% efficiency loss) I have zero experience with LEDS but I know they are rated to 50,000 hours. Maybe he'll pop in and verify one way or the other. ... Generally for a 600W MH or HPS system with digital ballast and a quality reflector you will need to spend about $200 to $300. The 3100K lamp is biased towards the red wavelength (ideal for flowering), and the 4200K lamp is biased towards the blue wavelength (ideal for vegetative growth), however both offer a wide enough spectrum for the full-cycle of a plants life. The info you give is False hope for someone to say hey this amazon led is 100.00 it’ll out perform a 150 vivosun cmh 315 with a Philips bulb and I’m sorry that’ll never happen. Funny you mention the ceramic hps. I noticed immediately that … Page 2 of 4 - 315w CMH/LEC vs 600w HPS - posted in Lighting and Ventilation: 630w DE CMH kit ftw. A higher R:FR ratio will reduce the shade avoidance effect.. calculators which suggest that 300 watts is about perfect for 6 square feet. 315 watt cmh vs 600 watt hps Growroom Lighting forum at International Cannagraphic Magazine. Just going by memory, but I thing that tenthirty found the 315 to be roughly equivalent to the 600w HPS that he had been running. Quality leds do yield close to the same as hps and cmh but everything is subject to the basics 1. But one alone won't do what a 600W MH/HPS will do. I’m jumping on the CMH train and plan on using a 315 for each 3×3 space and hung 18” over the canopy as they don’t get nearly as hot and the only negative compared with HPS in my experience is the light penetration so hopefully hanging them lower will remedy that issue. Better for vegging than the 3100 K. 630w cmh vs 600w hps A strong 900-700 PAR rating in the middle and an average of 500 PAR in the outer area. 05-27-2018, 06:09 AM Hi so I have a 4x4x6 grow tent on the way and I am going to be using cmh grow lights but I want to know if the good folk at grow weed easy thinks it’s better have two 315w cmh grow lights or one 630w grow light? Growers are moving to CMH’s because of their power per watt. What about the hortilux ceramic hps ? Not a hope in hell. I was just trying to research it myself this morning. For a better experience, please enable JavaScript in your browser before proceeding. The EYE HORTILUX CMH 315 grow lamp was designed specifically for horticulture. Style (method of growing) 4. Any evidence to support this? Many LED grow lights allow you to “adjust” the spectrum. Co2 added If mass and yield is your game. I have 2 Migro 240 LED Aray in a 1.2 m tent and am also running a 600w HPS in another 1.2m tent. Before they started testing led they proved that between hps and mh hps grew faster bigger plants everytime. The square wave ballast technology and spectrum make for insanely frosty, squat, happy plants. The only difference I saw was the hps has slighlty more node spacing. A 600w light might still run a little hot in a zipped up tent but it should be manageable, giving you a good final product with a good yield. I did my homework and found it had plenty enough red for flower. Try and match up recommended footprints rather than wattage. They're usually more expensive to buy, that's why we tend to use HPS more than CMH (or COBS now). Id say a 315 is equal or better than a 400 watt. I mean they ain’t going nowhere anytime soon,but with the quality from LEC/LED if you have a choice,I would go for the quality brother…, 600w HPS would probably yield better Style (method of growing) 4. We’re a welcoming group and we love to get high and drop science. CMH vs LED: Adjusting Light Spectrum Also, CMH grow light systems have a removable bulbs. Most ceramic metal halide lamps were designed for use in the retail space, so the UV light was blocked. Brand new technology can be a cautious buy, especially if the results are unproven. 600 watt hps vs 315 cmh growers choice week 4 into flower. Another thing to love about them is bulb replacement, they last about double what an hps lasts. Havnt built the room yet, but the dye is cast and i have 4 630cmh lights sitting in my living room, I would def go with the CMH over the hps…possibly a CMH315 for veg and 2 more for flower instead of 600HPS… It’s hard to knock a couple of fresh 600w horti’s, but after seeing the results from the 315’s I will be buying two more. The buds are denser, the oil production from the plant is off the charts and the terpene profile is way stronger. for a 4x4 your competition would be a 315 CMH or a 400w HPS in my mind. CMH fixtures pull low watts (315 Watts), but its output can be compared to a 600-watt HPS. 20,000 hours with and only losing 15% efficiency vs a 600w hps lasting 24,000 hours but losing 30% efficiency. But if you compare the 630w of CMH to 600w of HPS then there is no comparison. newguy123 There’s plenty of evidence to support their validity. LEC lights usually have proprietary reflectors, whilesome CMH lights use more typical MH/HPS reflectors. only growing in a 2 foot x 3 foot space and I run a 315 LEC. The university of Michigan is my source for spectrum and effect on plants and Utah did the full testing on the cmh315. the 315 would work well with a 3x 3 space also. So you’re rocking 915 Watts in about 10.5 square feet ? Basically you need to replace a hps 600w bulb twice as much as a cmh 315w bulb (at around 15% efficiency loss) I have zero experience with LEDS but I know they are rated to 50,000 hours. Hey Scotty and dude !!! I ask because i suspect the reason HPS's spectrum is superior for flowering is because of it's lower R:FR ratio. I'd like to see a side by side with the 315 … But also seemed to grow faster than the mH. You can do veg with HPS too but it's a lot better with MH or CMH. The HPS produced the yield, while the MH lamp provided blue light and some UV, which encouraged terpene & essential oil production. But if it were me, I'd probably replace 3 x 600w HPS with 4 x 315w. 315w cmh I thought was 78.5% of the power of the 600w in terms of photons.. 315w cmh uses only 52.5% of the power-draw from the wall as the 600w does. So in comparison, one 600w HPS grow light puts off 2,400 BTU ’s whereas one 315 W CMH grow light puts off only 1,260 BTU’s, which is almost less than half the HPS light. I run an LEC, and after running 600w and 1000w HPS lights for years, I’ll never go back. for a 4x4 your competition would be a 315 CMH or a 400w HPS in my mind. Running a 250 HID vs 250 LED would be silly, LED will win. Im planning on waiting 5yrs to replace mine. This is where I’m going to run into problems! CMH lamps produce a more stable light beam, give better colour rendering and have a much longer useful life (about 50% longer), providing better performance than MH and HPS lamps. With the ability to reach high temperatures, a 315w CMH light is known to outperform a 400w bulb and even some 600w’s. I ended up getting a 600w combo instead because I had a larger area than a 400w could handle.. Wow !! Growers are moving to CMH’s because of their power per watt. I’ve read a few threads about them along with one journal but have yet to find any other information on the light. This isn’t exactly what you asked but I tested a 315 Phillips 3100k in an open vertical reflector in a 2.5’x 2.5’ area vs a Hortilux 600w super hps in a 3.5’x3.5’ area. I run both in my current flower room. Im planning on waiting 5yrs to replace mine. A recent addition to the market is Ceramic Metal Halide (CMH) bulbs. 30w is nothing, its … Double that with a 630w and you’re getting almost as much power as you would with a 1000w MH light. This isn’t exactly what you asked but I tested a 315 Phillips 3100k in an open vertical reflector in a 2.5’x 2.5’ area vs a Hortilux 600w super hps in a 3.5’x3.5’ area. Result: 96 pounds vs. 78 pounds per bed- A 23% increased in yield while saving approximately 46% energy” You know man,HPS still rocks the party but with the LEC/LED revolution,,,I feel HPS/HIDs are phasing out man… With all that being said, with CMH lights your tent will be cooler meaning you have to run your AC less, again lower your electricity bill. If he he. CMH have better spectrum, dissipate less heat and use less power. Seems like the best of both worlds for ya. I was planning on running the 315 LEC for veg and the 600w HPS for flowering but if I could save money and only by one light that would be super awesome!!!! thats what i will get im sure. I've got both and use them together in a 1 metre x 1 metre and I like to start with cmh, then hps, then bang them both on after week 3 temps allowing. It’s hard to knock a couple of fresh 600w horti’s, but after seeing the results from the 315’s I will be buying two more. The only caveat is they’re good for 3×3′, not much more. Hortilux is trying to get you to use their gold ballast and reflector but I don’t see any reason it won’t work fine in my blockbuster air cooled hoods run by my 600w galaxy ballasts. More stretch and more bud vs leaves on hps. Spectrum - 3,100K vs 4,200K. If I could afford 2 CMH or I should say WHEN, I can afford 2 CMH I will make the switch.. CMH bulbs rock! supplemental lighting or better yet as many have suggested a 630 duel bulb cmh. Each tower was replaced by 10 x 315W CMH grow light module, a total of 120 x 315W CMH agro. The 315 CMH might not yield quite as much in your tent, but your final product would most likely be of higher quality and you would save you almost 50% on your electricity bill. I’m Does a MH veg better than an HPS I read articles like this all the time. I almost bought a 400w CMH. Plus you can do the full cycle with CMH. What kind of weights have you been pulling using that setup ? Best Of Luck ! Despite this relative inefficiency, it was a common scenario for growers to use the combination of a 400W Metal Halide alongside a 600W HPS. The Pros And Cons Of Using LEC Lights To Grow Cannabis. The MH tent was for my outdoor ladies. I’ve used wattage/square ft. Despite this relative inefficiency, it was a common scenario for growers to use the combination of a 400W Metal Halide alongside a 600W HPS. you do end up going with two lights and use LEC for veg make sure you go with the 4K The yield was 5%-10% better. I can’t say wether the hps would yield more than the MH since I only flowered the hps tent. Thanks for your time and take it easy! My PC draws 550w all day. Both the 315 LEC and 315 CMH grow lights should be kept at least 18″ from the top of your plants, with some models needing to … I thought Loooooong and hard about what lights to go with in my new grow. Hey guys , updating my grow going a bit bigger for this next run i have currently 1 200w(400 true watt) blurple led and 1 600w hps. Each room is 4’x4’x6′. Dude and I really like our Spectrum Kings… Just sayin… . 1) Hood has no glass and bulb puts out uv-b which helps with resin production. 600 watt hps vs 315 cmh growers choice week 4 into flower. There’s DGC that are crushing it with DIY led. I prefer the 315 for a few reasons but HPS is still good IMO. They are more expensive per watt but they have a good spectrum (about 11% blue) and a higher efficiency than HPS in most cases. There are several big time professional growers in the DGC that say they are the best lights they’ve ever used and I am far from their expertise or level as a grower buy I can attest to that as well. A CMH can cover larger areas, making them the most energy-efficient choice when compared to other gorw lights. The EYE HORTILUX CMH 315 Grow Light System will only accept CMH lamps with a PZGX18 (bi-pin) base. They concluded that for sheer speed and size the highest lumens always won. The CMH had less stretch and … bulb. Carefully install the lamp into the socket by inserting pins into matching shaped holes in socket and turning lamp to right (clockwise). Another thing to love about them is bulb replacement, they last about double what an hps … Grower experience 2. If you want to see LEC results, check out Instagram. The HPS will put out probably more weight but ceramic metal halide going to give you a healthier and more oil rich product. Thankfully, as the use of LEC lights spreads, reports of their efficiency and ability to improve yields are enticing an increasing number of growers. My advice by and run them both. Then we built a new setup at another location and decided to run 4x 315mh 3700k on a 4x8 tray. Not to mention the energy savings. 315w is 600umol/s I really like having a lamp with good CRI, regardless of anything else. Two 315w cmh or one 630w cmh? best part is i look at a 630w cmh like its a 1000w hps. My opinion a 4 x 4 would need some A 600w HPS is always going to produce more buds than a 315w CMH. The Migro Aray 240 x 2 is,… Dr. Natural - 27th September 2020 What about a 630 LEC? 315w LEC would probably be better quality. Register: ICMag: Forum Menu ... 600w HPS is ~ 1100 umol/s. Basically, this just means turning off the red or blue diodes on the grow light. CMH is a newer technology, it's consumption is much lower, the coverage is better and its dual spectrum lighting - the plants love it. There are so many articles about red vs blue spectrum.

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