I've been thinking a lot about this lately. The 315 will put out plenty of PPFD if you get it close enough. According to Phaeton a 400 watt CMH will put out 1500 ppfd at 8 inches, but that's too close and overheats the top of the plant. The hood you have is designed for good horizontal reach though so I'd love to play around with it with a par meter and see how close you can get it while getting the intensity and spread you want without overheating the middle.
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Philips 315w CDM Elite (CMH)
- Thread starter rives
- Start date
I've been thinking a lot about this lately. The 315 will put out plenty of PPFD if you get it close enough. According to Phaeton a 400 watt CMH will put out 1500 ppfd at 8 inches, but that's too close and overheats the top of the plant. The hood you have is designed for good horizontal reach though so I'd love to play around with it with a par meter and see how close you can get it while getting the intensity and spread you want without overheating the middle.
Interesting. I was under the impression vertical reflectors gave better intensity. That seems to be what the consensus feedback was on the OG reflector using 600 and 1000W: great narrow intensity but bad uniformity and tiny footprint. I wish more people had par meters and could test these things out like EZ Ryder did.
Hammer , can i use these in my block buster hoods & Galaxy ballasts turned down to 400 watts , or should i just grab a CMH ballast too ? & which one would you suggest ?
joe gave me a link to these , but i wasn't sure about quality .
http://growershouse.com/ceramic-science-315w-cmh-light-conversion-kit
I think that we are saying the same thing in different ways. For conventional light fixtures that are designed for area lighting, there will be a loss of peak intensity on equivalent footprints with a vertical lamp, but a well-designed fixture (Cycloptics, for instance) will give better uniformity. Fixtures that are meant to concentrate the light into a very tight spot by collimating the light can provide higher intensity, but with limited distribution. If the light has to bounce off of a surface to get to it's target, there is inevitably going to be some loss. The distance traveled is greater and the reflectivity of the surface is never 100%. This can be overcome by tightly focusing the spread, but by the time you back the fixture off enough to get the same overall footprint, you should be back to a net loss.
These bulbs are made for Low frequency square wave ballast. You can use them in any reflector with the adapter or buy 315 mogul bulbs. High frequency digital ballast will shake the life out of these bulbs reducing bulb life.
I use 1 of those kits. No issues with it so far. I use 2 of those ballast. I'm more satisfied with those then with Phantom. Had 2 Phantom II 315 ballast arrive defective. That kit is fine with a Phantom hood. Don't expect the same results from a 315 vs 1k light it just wont happen. Min of 2 315's preferably 3 for every 1k you replace.
cool , i'll stick with those then .
i'm only replacing the 600's in veg with them . i can only turn my 600's down to 400 as it is with the heat in veg , so i might as well get something in there worth while using , & i can use my 600's in flower . no plans on flowering with the 315's yet .
headees
Active member
Have you guys seen these new 3k-R DE CMH's? Supposed to be a better spectrum for flowering with increased UV. I cant seem to find anyone selling them yet though.
Growerhouse says they are still running tests on them but should have them in at some point. Hope they are not asking the MSRP
http://www.growersc.com/#!630w-3k-r/i8hhd
Growerhouse says they are still running tests on them but should have them in at some point. Hope they are not asking the MSRP
http://www.growersc.com/#!630w-3k-r/i8hhd
cool , i'll stick with those then .
I was using these for veg only. I decided to convert the tent with the 630 to test flower. I was pleasantly surprised with the results so I started running plants in there until they finished stretch then moved to the main room with just HPS until done, loved the results from this. I then decided to take down the only E-PAP replaced it with 2 315's in the main room. All plants lov the added spectrum from the 315's. I'm gonna leave it with the mixed HPS/CMH..
No, the 315 requires a special ballast. The lamps will be destroyed by a conventional high-frequency ballast. You should read the first page or so of the thread for an overview.
The DE 630 4k bulb is now in the tent. 1st time it fires will be tonight. will see how it does.
I got it online.
I just checked the 630 DE its on. weather it performs the same as the 2 sigle 315 will have to wait a few months..
I also got a reply about there 630w LFSWB. There pushing for a Nov release. They said they would keep me informed.
I'm in the process of making 2 315w Phillips ballasts. All the prats are on order.
I also got a reply about there 630w LFSWB. There pushing for a Nov release. They said they would keep me informed.
I'm in the process of making 2 315w Phillips ballasts. All the prats are on order.
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Thanks Rives!
So I've gone back & read the entire thread from beginning to end. There was a lot of talk at the beginning about a mogul Phillips lamp. I see HTG supply now has a 315 watt CMH with a mogul lamp. Can't find any info about it but wondering if this would be compatible with the Phillips mogul:
http://www.htgsupply.com/products/agromax-hypar-315w-cmh-grow-light
So I've gone back & read the entire thread from beginning to end. There was a lot of talk at the beginning about a mogul Phillips lamp. I see HTG supply now has a 315 watt CMH with a mogul lamp. Can't find any info about it but wondering if this would be compatible with the Phillips mogul:
http://www.htgsupply.com/products/agromax-hypar-315w-cmh-grow-light
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It's hard to be certain but those components are likely compatible with the Philips 315 CDM system. The key to understanding is that it's a distinct system of compatible ballasts & lamps now offered by several manufacturers. Any 315 CDM lamp should work with any 315 CDM ballast.
The Agromax info tends to confirm that their lamps & ballasts are part of the expanding family-
http://growagromax.com/products/
That hypar/agromax ballast looks exactly like the prism ballast.
They probably are. Most Vendors order them from China with there logo on them.
fyi i had to order BAASP plug adaptors to use the phantom reflectors with the prism ballasts.
