Club 315w lec

AlaskaRob said:
Exactly why you would want proper ballast use that matches the bulbs you are using. New cmh bulbs use low square wave ballast, not digital ballast like gravitas. Gravitas are damn good for hps/mh, kinda risky for cmh tho. IMO
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The CMH315 has the own designed LF ballast. BUT, from 630 to 1000 CMH, it really depends on whom made the bulb, some factories can only made CMH for LF ballast, the growerschoice CMH1000W could use on HF ballast, i attached the screenshot from their web.

Our CMH1000w is designed to use on HF ballast, the idea is to let you guys use one ballast to drive both HPS and CMH.
We have contacted and sent samples to ballast makers who supply those big brands (like gavita) , we did lots matching before sent to grower.

Before i sent samples to any grower, i always ask what ballasts they have at first.
 

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What about the benefit of having a low-frequency square wave Ballast? With longer waves in between cycles in the 60 Hz zone, more light hits the plan are cycle over a regular digital ballast that has a higher frequency
 
I'm using a Barron Growlite 315 CMH digital ballast and bulb. The bulb is different from the Philips because it is a screw-in type with an old style mogul. This is my second round with it in my 3X3 tent using GH nutes in Promix BH and I could not be happier. My first round was a learning experience but my Critical Kush and Hawaiian plants were very impressive. One thing I noticed this time is that the addition of CalMag+ with every feeding has possibly solved a deficiency. It seems as though some of you have discovered this as well. This time round I am scrogging and I think that this setup is just perfect. I believe, however that next time I will switch to Coco Coir, but other than that I can't think of a setup better for my needs. My reflector is just an open El Cheapo wing style but it seems to provide excellent coverage.
 
Hello doofus,
others and myself included have found that when using the cmh bulbs theretends to be a common calcum or magnesium deficiency. Something to do with the specific spectrum put out by the bulbs. The idea we all seem to agree on is thst the fuller spectrum with the increased UV, and far deep reds seem to allow the plant to better absorb these nutrients versus other bulb types.
Another thing you may want to consider, is that it's pretty common for anyone using coco four to also experience a calmag deficiency as well.
That being said, I have a dual bulb 2x315 cmh using the Phillips 945 4200k bulbs, and i love what the combination has d9ne for my grandaddy purple plants.
I don't say any of this to try to discourage you, in fact very much the opposite. I think cmh and coco is a great combination! Just be aware that you will definitely need a calmag supplement. I currently use CalMag+ from Botanicare, but will be switching to Calimagic as soon as my Calmag+ is empty. The + is the nitrogen thst is useful in veg cycle, but takes up space in my nutrient profile is rather use for something else during bloom cycles.
I hope this helps at least a little.
 
AlaskaRob said:
What about the benefit of having a low-frequency square wave Ballast? With longer waves in between cycles in the 60 Hz zone, more light hits the plan are cycle over a regular digital ballast that has a higher frequency
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Hi, AR.
The frequency and light output are irrelevent. Normally CMH is suitable for LF, so factory make LF ballast for it. BUT, since material changes and optimized designs, CMH can match up the HF ballast, like the one we have.
 
GoBrah said:
Hi, AR.
The frequency and light output are irrelevent. Normally CMH is suitable for LF, so factory make LF ballast for it. BUT, since material changes and optimized designs, CMH can match up the HF ballast, like the one we have.
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Can you talk more about your statement that the light output is irrelevant? That's not generally something a manufacture of lighting equipment would say, and I think we may be missing what your trying to explain without further details.
 
growingforfun said:
Can you talk more about your statement that the light output is irrelevant? That's not generally something a manufacture of lighting equipment would say, and I think we may be missing what your trying to explain without further details.
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I mean the frequency does not determine how much the light output. the suitable freqency match the ballast and bulb, so they running stable.
 
Ever notice the lines when someone takes a pic of their plants? Ever notice how when someone shares a pic of a cmh in proper ballast how there are no lines? Not visible to the eye but the plants see them. Those are gaps in the light available to the plant from the high frequency flicker. A square wave ballast, sometimes called low frequency, longer sine waves with less peaks and valleys. So more light is available per cycle from high peak to low peak in your 120/240v Alternating current power. That's what the 60hz meanslisted on electronics. Ever try taking a pic of a regular tv screen or computer monitor? The lines you see are the gaps from +peak through 0 to the - peak. Both peaks give the power for the appliance, but as it passes through zero there is no power. Regular sine wave looks like a ~, where as square wave looks like (this is going to look stupid but hopefully illustrate the idea) -l_-l_
Does that make sense?
I'll try to find the technical manual if you would like. I'm not the best at explaining stuff, I just went to trade school and did the electrical apprenticeship.
 
Regardless, it's what makes a 630w cmh square wave ballast give very similar results to 1000w hps. The light spectrum with the added UV and far reds is a hell of a bonus.
 
AlaskaRob said:
Regardless, it's what makes a 630w cmh square wave ballast give very similar results to 1000w hps. The light spectrum with the added UV and far reds is a hell of a bonus.
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So to sum up what your saying a square wave 1kw cmh is going to be superior to a 1kw cmh running on a high frequency ballast hands down. Is the right?
 
Heres some new 315 3100 k. Pics. We have a nice bluberry in the closet with 16 mainlined heads. And a vanilla kush in its 8th week looking great. Check out the tiny blade growing backwards on the blueberry leaf. Very cool genetics. The monstorcropped skunk is just about ready to flower. It will be a beast. The little blueberry gave birth to some yellow tipped leaves. Weird. I think it got over fertilized a bit. Any ideas? Seems to be ok. The big bluberry in the closet was broken but recovered nicely and is now in the stretch. Its in a 10 gallon fabric pot. Never seen such a huge pheno. Leaves li20190423_155552.jpg 20190423_155545.jpg 20190423_155533.jpg 20190423_155408.jpg 20190423_155545.jpg ke dinner plates. And the smell is heavenly.
Happy growing to all.20190423_155652.jpg 20190423_155647.jpg 20190423_155641.jpg
 
Has anyone run the 1000watt cmh on the revolution deva fixture it’s supposed to be a low frequency ballast? They claim it has a very low failure rate which would be nice as I tried a couple Chinese de 630 ballast and both quit working.
 
AlaskaRob said:
Ever notice the lines when someone takes a pic of their plants? Ever notice how when someone shares a pic of a cmh in proper ballast how there are no lines? Not visible to the eye but the plants see them. Those are gaps in the light available to the plant from the high frequency flicker. A square wave ballast, sometimes called low frequency, longer sine waves with less peaks and valleys. So more light is available per cycle from high peak to low peak in your 120/240v Alternating current power. That's what the 60hz meanslisted on electronics. Ever try taking a pic of a regular tv screen or computer monitor? The lines you see are the gaps from +peak through 0 to the - peak. Both peaks give the power for the appliance, but as it passes through zero there is no power. Regular sine wave looks like a ~, where as square wave looks like (this is going to look stupid but hopefully illustrate the idea) -l_-l_
Does that make sense?
I'll try to find the technical manual if you would like. I'm not the best at explaining stuff, I just went to trade school and did the electrical apprenticeship.
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you are totally right about electrical knowledge, when it passes through zero there is no power.
In the circumstances of HID does not produce any light when pass through 0, you are right because HF passes more than LF during same period of time.
but for the light itself, when the moment there is no power, light still emitting because the plasma inside remains the working temp for a short while.
im sure you heard duty cycle, if the duty cycle is low the plasma losses its working temp because of long time no power, there will be a very obvious flickering, and easily catch the line by camera, it happens on both LF and HF.

For both HF and LF ballast, the key is to control a good duty cycle to let the light emitting consitantly.

The low frequency is good for bulb life for sure, cuz HF waves damage the bulb more.

Hope it explains.
 
growingforfun said:
So to sum up what your saying a square wave 1kw cmh is going to be superior to a 1kw cmh running on a high frequency ballast hands down. Is the right?
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Definitely believe so, but that's from what I keep reading on different forums. I have not had the interest t9 do a side by side test myself. I use cmh, never read or seen anything wrong with them, and they're doing great for my needs.
In the end, every person will find what works for them. I can only encourage those thst haven't tried cmh to look into the numbers, diagrams, etc. and give it a try. Technology is always evolving, but I really think this cmh technology is what will be what I stay with.
 
Do you guys notice you get the lines on your pictures when your bulbs get old. I get lines on my pictures and my ballast low frequency. They are the sunburst 315 with Phillips bulbs. I never paid any attention before so I’m not sure if always did or just because bulbs getting a lil old.
 
Picture for example of the lines I mentioned in post above forgot to add to post.
 

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