Philips 315w CDM Elite (CMH)

[Ez Rider]

That run was my first all-CMH run start to finish, previously I had been using 1515w (2 x 600w gavita and 1 x 315w cmh) so when I switched to using all ceramics ( 4 x 315w) I was actually using less wattage but got a 10 ounce improvement on yield!

As for internode length then yes I would say they are shorter despite them growing buds as long as my arms - another thing I have noticed is that smaller buds that join to form the larger cola are much, much, branchier - almost fractal in that they are minimicing what the larger colas are doing but on a smaller scale - I never noticed it so pronounced under HPS. (I will try and get some photos of that)




The cut in question is a Sativa dom indica hybrid - the point of the cross was a plant that grew like an indica but had the high of a full Sativa (Smile by Oldtimer1).

Under HPS the plants hardly stretched, it was such a slow stretch over about 6 weeks I almost missed it! Under the ceramics I'd say they stretched and filled out 100 - 200% more than under the sodiums.





Here are two pictures, the first is of "Smile" which I am mentioning, as you can see they stretched like fuck. I put a net in at the last minute to try and contain them a bit - glad I did or I'd have to have taken the tent down!

[URL=https://www.icmag.com/ic/picture.php?albumid=63033&pictureid=1580585&thumb=1]View Image[/url]


Here are the "Disco Biscuits" (A cookies dom cross) and "Smottie Remix" a UK-homebrew project (These have been swamped under the cookie crosses under the filter to the left) ((21 days flower here))

[URL=https://www.icmag.com/ic/picture.php?albumid=63033&pictureid=1580584&thumb=1]View Image[/url]


Here is a picture of the above plants on their last day of veg, they probably weren't even a meter tall at that point!

[URL=https://www.icmag.com/ic/picture.php?albumid=63033&pictureid=1580586&thumb=1]View Image[/url]

Maybe it's the sativa in your mix making the difference? What you're showing under CMH is how my SourBubble stretches under hps, where it typically doubles in size. Under the CMH they've only increased by 50%. I just started week 5, and I don't see any indications of further vertical growth. This run I flipped @ 16"-18". Next run, I'll wait untill they're 24"-28", and get them bushier. I'll also be adding MbFerts vitamin-hormone boost, which I've been told will help increase the stretch. I'd like my plants to finnish @ 36-40". This is as high as I can go, and still have a reasonable amount of headroom(~20").

Nice looking plants BTW

 

[GoldenSyrup]

Maybe it's the sativa in your mix making the difference? What you're showing under CMH is how my SourBubble stretches under hps, where it typically doubles in size. Under the CMH they've only increased by 50%. I just started week 5, and I don't see any indications of further vertical growth. This run I flipped @ 16"-18". Next run, I'll wait untill they're 24"-28", and get them bushier. I'll also be adding MbFerts vitamin-hormone boost, which I've been told will help increase the stretch. I'd like my plants to finnish @ 36-40". This is as high as I can go, and still have a reasonable amount of headroom(~20").

Nice looking plants BTW

Thanks dude

I think you might be right, the only thing I can think of is perhaps the full spectrum helps the plant to express itself better than under HPS!

 

[McKush]

Good looking veg there Golden! very nice all the way around.

 

[GoldenSyrup]

View Image

Good looking veg there Golden! very nice all the way around.

Thanks dude, I gave them 21 days from a rooted 1L pot. I put another two 315w lamps in half way through stretch... I was impatient and maybe should have waited until the stretch stopped lol

4 lamps was just about enough in the space but I found no matter how I positioned the lights there was always a bit around the edges that wasn't as well developed as the rest.

 

[Ez Rider]

Thanks dude, I gave them 21 days from a rooted 1L pot. I put another two 315w lamps in half way through stretch... I was impatient and maybe should have waited until the stretch stopped lol

4 lamps was just about enough in the space but I found no matter how I positioned the lights there was always a bit around the edges that wasn't as well developed as the rest.

I wish my SourBubble got that big with 21days veg. If you can afford it, man up to the Greenbeams hoods. WAY more even coverage. My bud development is very consistent throughout the tent. The C/G all but eliminates the "hot/cold" spots you're getting from your horizontal fixtures.

 

[GoldenSyrup]

I wish my SourBubble got that big with 21days veg. If you can afford it, man up to the Greenbeams hoods. WAY more even coverage. My bud development is very consistent throughout the tent. The C/G all but eliminates the "hot/cold" spots you're getting from your horizontal fixtures.

Hi man unfortunately we're quite limited here in the UK with only four units available to us, dimlux, dpap/epap, maxibright and omega.


The dimlux and dpaps are super expensive, we're talking around £800+ for the 630w systems which I think is about $1100 a unit.

Omega aren't exactly the most trusted brand here in the UK - the Maxibright units use all the same internals (phillips advanced etc) as the dpaps but they are more than half the price. Around £250 a unit ($300 or so im working in my head lol) and I am getting them a great price so I went with the maxibrights.


I imagine there will be some parabolic type reflectors getting released soon - I liked the maxi horizontal shades they are dual parabolic, the parabolics of the reflector are specifically designed around the 315w I think maxi did a good job ! I am happy with them, I have a pretty even canopy temp.

 

[Ez Rider]

Hi man unfortunately we're quite limited here in the UK with only four units available to us, dimlux, dpap/epap, maxibright and omega.


The dimlux and dpaps are super expensive, we're talking around £800+ for the 630w systems which I think is about $1100 a unit.

Omega aren't exactly the most trusted brand here in the UK - the Maxibright units use all the same internals (phillips advanced etc) as the dpaps but they are more than half the price. Around £250 a unit ($300 or so im working in my head lol) and I am getting them a great price so I went with the maxibrights.


I imagine there will be some parabolic type reflectors getting released soon - I liked the maxi horizontal shades they are dual parabolic, the parabolics of the reflector are specifically designed around the 315w I think maxi did a good job ! I am happy with them, I have a pretty even canopy temp.

I feel you on the cost. The C/G's set me back ~$500/unit. Not sure about shipping and customs costs for you, but I'm sure cycloptics or growershouse will cheerfully ship to your location. All you'd need is the hoods(and some paint for the lamp tips), but they're still $250-$300 each.

FWIW the Phillips 315 was designed specifically for use with the C/G luminaire. I'm willing to bet the C/G will vastly outperform ANY horizontal setup using the same lamp.

 

[McKush]

.

FWIW the Phillips 315 was designed specifically for use with the C/G luminaire. I'm willing to bet the C/G will vastly outperform ANY horizontal setup using the same lamp.

I did not know that

 

[GoldenSyrup]

C/G being the cycloptics green beams? I didn't know that either or have I got the wrong end of the stick?

 

[McKush]

EZ says C/G, I use GB. diff strokes but the same thing

 

[Hammerhead]

I feel you on the cost. The C/G's set me back ~$500/unit. Not sure about shipping and customs costs for you, but I'm sure cycloptics or growershouse will cheerfully ship to your location. All you'd need is the hoods(and some paint for the lamp tips), but they're still $250-$300 each.

FWIW the Phillips 315 was designed specifically for use with the C/G luminaire. I'm willing to bet the C/G will vastly outperform ANY horizontal setup using the same lamp.

REALLY? Phillips is not known for being open about there products being used for growing. I could see GB designing there light to work with the 315 but not the other way. Phillips would stop public retail if they thought they where used to grow just like they did with there DE bulbs.

 

[GoldenSyrup]

EZ says C/G, I use GB. diff strokes but the same thing

REALLY? Phillips is not known for being open about there products being used for growing. I could see GB designing there light to work with the 315 but not the other way. Phillips would stop public retail if they thought they where used to grow just like they did with there DE bulbs.

Yeah I did wonder... I ditto the above.


Just as an addon, I've had a look at their site. Greembeams were designed around the 942 lamp, but a university they were working with for indoor growth chambers worked with phillips to design the 930 agro lamps (doesnt neccesarily mention the greenpower?) from what I can gather so yeah, phillips worked with them and a uni on the horticulture lamp but phillips didn't work with them on the luminaire.

 

[Jhhnn]

Yeah I did wonder... I ditto the above.

Me 3.

 

[rives]

Greembeams were designed around the 942 lamp, but a university they were working with for indoor growth chambers worked with phillips to design the 930 agro lamps (doesnt neccesarily mention the greenpower?) from what I can gather so yeah, phillips worked with them and a uni on the horticulture lamp but phillips didn't work with them on the luminaire.

The 930 & 942 315's were available in Europe as architectural lamps quite a while before Cycloptics got into production. I have 930 lamps with a manufacturing date of 2009, and I think that the first C/G luminaires went into production in that latter part of 2011. As you said, the Agro was a later version optimized for horticultural applications with input from Cycloptics and the growth chamber people. The "GreenPower" version is just a new name for the older "Agro".

 

[GoldenSyrup]

Thanks for clearing that up Rives! I saw there were 930 lamps with similar spectral out put to the 942 - it explains where the "green power" lamp came from at least.

What are your thoughts regarding the UVA difference between the green power 930 v the 942?

 

[rives]

According to my version of the Philips Elite Design Guide, the 942 puts out double the UVA that the 930 does (8 vs 4 UVA uw/cm2), but those are both the PGZ18 lamps. The mogul-base ED37 lamp puts out 13.88, but it is only available as a 942.

 

[Ez Rider]

REALLY? Phillips is not known for being open about there products being used for growing. I could see GB designing there light to work with the 315 but not the other way. Phillips would stop public retail if they thought they where used to grow just like they did with there DE bulbs.[/QUOTE


I believe this is why they primarily distribute to "hobby" growers through growershouse. Their main market is universities/researchers. Respectable kinds of people who Phillips finds non-threatening. I am keeping an eye on the situation just in case I need to stock up.

 

[dbkick]

Solis doesn't mind being associated with our type of growing.
And now with low iron glass for more uv than genuine philips.
http://solis-tek.com/products/solistek/solistek-315w-ceramic-metal-halide-3200k-lamp.html

 

[dbkick]

There's a 50k sq ft grow in CO, they're using t9 in open fixtures.
Lack of basic knowledge during inspection or somebody grease somebodies palm eh?
None of my business since I don't work under the lights. You'd think a big thing like that wouldn't slip by in an inspection though.

 

[rives]

There's a 50k sq ft grow in CO, they're using t9 in open fixtures.
Lack of basic knowledge during inspection or somebody grease somebodies palm eh?
None of my business since I don't work under the lights. You'd think a big thing like that wouldn't slip by in an inspection though.

In my experience, most inspectors are out of their element when inspecting anything other than residential or light commercial work. I'm not even sure who would be responsible for catching something like that - it would be more of a workplace safety/OSHA issue than the electrical inspector.