If you want to understand how ceramic metal halide grow lights work and how to use them, read on. By the end of this article, you will know everything you need to know! These products are reviewed in more depth below, but you can click on the links above to check out pricing or reviews. First of all, what are these lights actually called? A CMH uses a ceramic arc tube similar to those used in HPS grow lights instead of the quartz used in traditional metal halide grow lights.
The ceramic arc tubes operate at higher pressures than quartz glass tubes, which enables manufacturers to make more precise variations on the spectrum than with previous technologies.
315w CMH/LEC vs 600w HPS
By comparison, HPS and MH lights waste a lot of energy producing light at ranges that are not efficiently used by plants. CRI describes how the color of a light source changes how an object appears to the human eyes and how well subtle variations in color shades are revealed. The higher the CRI, the more realistic things look. This means that CMH grow lights will let you see the true color of your plants without making your grow room look yellow, blue or purple.
CMH grow lights provide UV ultra violet radiation, which although being outside of our range of vision is beneficial at certain ranges and intensities to plant growth and development. But remember not to look at or work around a bulb with a broken outer glass jacket because UV radiation burns, and this damage is cumulative. Even still, the debate rages on. And research is still being done to figure out if the added benefit of a better spectrum improves the overall crop even with the diminished harvest.
CMH grow lights usually output a lot of light in the infrared part of the spectrum over nm which makes them output quite a lot of heat. Another disadvantage is the initial cost. However, in the long run CMH will still save you more energy.
So you can see the difference in output here. If you remember that PAR is light in the range between to nanometers, and is the actual usable light by plants. Generally, MH bulbs tend to be heavy on the blue, and HPS on the red side, which is why many growers who want the perfect canopy combine both technologies. CMH may still be combined with HPS for an added boost on the red spectrum which benefits flowering crops so much.
The specifics of CMH ballasts are a little bit tricky. It is highly recommended that you purchase a whole CMH kit instead of trying to retrofit a CMH bulb into your old ballast. Usually CMH do not run on most electronic ballasts due to the extremely high frequency these ballasts output. Regardless, there are some high end electronic ballasts that can run CMH grow lights without any problems due to their microprocessors.
To avoid any problems and confusion, CMH manufacturers insist that you buy a CMH grow light kit, this comes with the bulb, the ballasts and a reflector all attached together for ease of use and installation. These PAR measurements were done at a height of two feet over the canopy which is the sweet spot for a 3 by 3 feet grow area.
630w cmh vs 600w hps
Ceramic Metal Halide lamps are usually rated for universal positioning, this means that they can be positioned vertically as well as horizontally, so feel free to play around with the positioning to find the best configuration for your grow area. Trying to do so would be very dangerous. The most noticeable point is degradation time. Standard MH bulbs have a lifetime of around 10, Hours. As previously mentioned, HPS grow lights are still the king of flowering crops.
HPS grow lights provide most of their PAR light as red light, which is exactly what flowering and fruiting crops need at that growth phase. My recommendation for anyone running Flowering crops is to use CMH as base lighting and use HPS as an added red light supplement to encourage the biggest and highest quality yields. Another point is that standard HPS need to be replaced every 9, Hours because of their significant degradation over time. Even though, there are many upcoming LED grow light manufacturers who provide factual descriptions of their products.
Thread starter dirkdaddy Start date Apr 2, Tagged users None. Does anyone have a guess as to how a cmh light stacks up against a w hps light in the heat department? Let's say I am not concerned about the greater yield per watt that cmh delivers, nor am I concerned about PAR, lumens, etc, I simply want a comparison on heat.
The comparison of heat between a cmh and w hps and w hps is pretty clear, but the comparison of a cmh to the heat of a w hps is not. In a 3x3 tent running a hps aircooled hood with a 4" vortex running full out I can keep the temp at about 3.
Will I see an improvement on that by switching the light and ballast out with a cmh? I don't know how you guys do it with HPS. I run four watt LED in a 4x8 with real watts out the wall and my temp sky rockets 20 degrees above ambient. That's with TWO 10" inline fans at cfm each on full blast and four 12" clip fans. If you stick your head at the end of my vent, youd think you're on a motorcycle going My idea in this scenario was to keep the air cooled hood the same and simply swap out the current ballast for a cmh one and use a socket adapter for the bulb.
Was just curious if this set up would run any cooler than a w hps. My eventual switch to CMH growing is essentially assured based on what I know now and what I've learned reading this forum. The equipment I'm using right now was purchased a few years ago before cmh and LED became more popular, and has been sitting in storage, hence I'm just "using what I got" at this point. For me it's just a question of whether I should drop the dollars on a new CMH ballast and bulb right now before summer to keep temps down even lower than my w hps can get, or just ride out the summer period with the hps and upgrade later on this year.
Made the conversion in one of my tents. The CMH certainly bests the w hps in heat. My temps are currently running either exactly the same as ambient room temp with the CMH versus 2 to 3 degrees over with the hps. A few times it has read under ambient room temp due to the tent being on the floor and the room thermometer is higher up on a counter.Comes standard with a 2. If a longer cable is needed it must be ordered separately, please see: DimLux Interlink cable for DimLux.
Provided with adjustable side reflectors for better overlap and to minimize wall losses. Due to the open design of the reflector the lamp is passively cooled which is a benefit for the life and efficiency of the lamp. There is a 50mm socket on the reflector which can be used to significantly reduce the room temperature by actively extracting the air. There are also optional add-on reflectors available which be placed to minimize the wall loss even more. This reflector is replaceable. Dim Button: 7 dim levels and off mode.
Can be switched on and off via the Maxi Controller as wel as stepless dimming. The DimLux Expert Series is the most advanced and complete lighting system on the market. DimLux combines the best of two worlds: The Alpha Optics 98 Reflector in combination with the Xtreme ballast and V Full Spectrum Lamp, is a complete fixture with the highest level of reflector efficiency and light output yet available.
The reflector is fitted with adjustable side reflectors for better overlapping and minimizing wall losses. Thanks to the open reflector design, the lamp is passively cooled, which improves both the service life and efficiency of the lamp. Warm air can be actively be extracted through. In addition, separately available add-on reflectors can be installed to further reduce wall losses. The reflector is replaceable. Its output is more comparable to the light produced by LEP light emitting plasma units.
LEPs actually have a slightly broader spectrum than the CDM fixture, but they simply do not compare in terms of brightness. A truly exceptional all-rounder that will add much to the quality and size of your harvest. Output levels can be switched between the following settings: w, w, w, w, w, w, w. With 7 settings, you have the flexibility to tailor your lighting to your plants demand based on environmental conditions in the grow area, ensuring that temperature stay well within range.
Lec 315w vs HPS 600w ????
Everything is included to get you started, with lamp, ballast and reflector all rolled into one package. This unit is fully compatible with the DimLux Maxi Controller. You can daisy chain up to of these systems using speaker wire and control their on and off times centrally — no need for contractors and timers! Just power the system directly from the mains and let the Maxi Controller take care of the rest. VPD gives us a much clearer picture of how the environment is effecting plants, describing the difference in vapor pressure between the plants themselves and the air around them.
The stomata on the underside of each leaf will then stay open, ensuring that photosynthesis is completely optimal at all times. The effects are nothing short of amazing! Run the 4. The sensationally bright glow of light emitted from a ceramic discharge lamp is just as impressive as the relatively small amount of power needed to drive it. Indeed, only the yield-boosting results that can and will be achieved with these products eclipses the energy and efficiency benefits on offer!
DimLux has embraced this exciting new technology, creating an innovative range of systems that take all the positive attributes of the outstanding Expert Series and then supercharge them to step performance up to the next level.Hey Scotty and dude!!!
I was planning on running the LEC for veg and the w HPS for flowering but if I could save money and only by one light that would be super awesome!!!! Thanks for your time and take it easy!
The HPS will put out probably more weight but ceramic metal halide going to give you a healthier and more oil rich product. My advice by and run them both. The square wave ballast technology and spectrum make for insanely frosty, squat, happy plants. If you want to see LEC results, check out Instagram. I thought Loooooong and hard about what lights to go with in my new grow. I was worried about how much Red was in this spectrum for flowering. I did my homework and found it had plenty enough red for flower.
With the CMH it seemed superior in every way to except light intensity and doing the s solves that. Im going with a duel bulb LEC with a mixed K spectrum for 1st half of flower and switching to duel 3k bulbs for 2nd half.
Havnt built the room yet, but the dye is cast and i have 4 cmh lights sitting in my living room.Harvesting under CMH 630 De full spectrum
I run both in my current flower room. The buds are denser, the oil production from the plant is off the charts and the terpene profile is way stronger. Another thing to love about them is bulb replacement, they last about double what an hps lasts. Not to mention the energy savings. As B Patient mentioned your grow space may be important in this decision. I think the would work well with a 3x 3 space also. My opinion a 4 x 4 would need some supplemental lighting or better yet as many have suggested a duel bulb cmh.
If you do end up going with two lights and use LEC for veg make sure you go with the 4K bulb. Better for vegging than the K. Best Of Luck! You must be logged in to post a comment.
Share this post. Hello everyone I am new to the forum, I have a serious doubt, we are planning a flowering room, in which I have about w total for the light I've used Dimlux CMH for my last 2 crops. The extra yield wasn't enough to warrant the hassle ime. Okay perfect, combine the two I understand, how would you combine them?
These new ones are no different in performance than the Philips W ones that run on my 30 year old W HPS magnetic ballasts. Excludes tax fees, which are calculated at checkout in any. Sorry, but something went wrong. Oct 8, 1 They are designed to run on those ballasts. Sounds like I got ripped off. It's threads on these lights already, they are good.
CMH lights have been around for 20 years. Not quite as advanced as the but probably pretty good bulbs. A watt might compete with a SEnot even close to a DE. All the info I've seen a cmh does indeed perform as well as a SE hps.
Most CMH growers will either use k's for the entire grow cycle, or use k's during the vegging stage and then switch to k CMH bulbs when it's time to flower.
I've been growing under 2 x w HPS in a 1. Best yield was g, worst g, but generally I hit g ish. As some of you know I'm one of those idiots that likes to do multi strain grows, which means compromises and assorted problems, all of which mean I could improve yields with single strain grows, but I love making my life difficult, and love variety in the stash even more, but I still manage an average yield around g consistently unless I have a couple of visits from the Fuck Up Fairy.
Usual mix of medium and good yielding plants, plus one plant having an unexpected under stretch, and one an unexpected over stretch. Short version, everything as normal and average. So, whilst I could have achieved a bit better if everything went perfect, I'm comfortable calling this well and truly good enough to be called average, and therefore directly comparable to previous average grows. So, whilst I'm calling bullshit on marketing claims, I'm still impressed, and see it as about as good as I could have expected from watts compared to watts.
And further to this, I will add that there are more important things than yield, and for me at least these lights delivered other extra benefits compared to HPS. For starters, my plants stayed lush and healthy right through to late flower, which is something I've never achieved under HPS before, only outdoors.
I put that down to issues with low humidity which HPS only seems to add to in my local climate. This is my 1st crop to have zero loss to mould, yes I usually only lose a quarter to half an oz but it's still significant. Resin production looks to be slightly improved as well, which is a big deal for me, and smells and taste also seem to be deeper and nicer like outdoor plants tend to be.
And finally the stone seems to be more complete and nicely rounded, also in the manner of outdoor plants. I put those things down to these lights having a spectrum which is supposed to be close to natural sunlight. Only problem I see with these lights is a matter of pure power. A bit like comparing a 3l German V6 to a 5l Yank V8, the V6 performs great and is a lot more efficient, but when it comes down to pure output nothing beats a muscle car.Forums New posts Search forums.
Would quality improve?
630w cmh vs 600w hps
Happy growing. The plants grow more compact and leafier with cmh. More stretch and more bud vs leaves on hps. The did 15 oz of very frosty bud. The did 24 oz of equally frosty bud. Some patients said the hps bud was better.