I don't see why not.
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Philips 315w CDM Elite (CMH)
- Thread starter rives
- Start date
I don't see why not.
CrazyKappa
Member
A long read, but a great one! I will be starting a medical grow in about 4 months, (can have 6 in flower, 12 total, will run perpetual) soon as my lease ends. You all have convinced me to go with the 315s, originally, i had wanted to do wither a vertical scrog with two bare bulbs, and or a Heath Roberson style bare bulb configuration. Was thinking offset flower rooms, 3 plants in a triangle, one bulb in the middle, and three bulbs filling the gaps on the outside. Each plant would get 3 sources of light.
But after reading some posts near the end, its does not seem worth it. What about running them in a vented cool tube? It would seriously reduce radiant heat, and allow the plants to be much closer to the bulbs. Has anyone tried that? Or is trying it now, so that i may follow?
The thing is, i am trying to do this the most economical way as i can, if i can run vertical lights in cool tubes, using the ATS combo, i can easily wire in a cold flop, and save a lot of money.
If running a hoodless 315 is not to be, can a single greenbeam cover a 4x4 2 plant scrog? I would not mount the light on the ceiling, it will be adjustable. Each scrog setup, (i would have 3) would be housed in its own enclosure made from pvc pipe and panda film, so it would have good reflective properties. If i am forced to scrog, i would like have each plant have its own 3x3, however, i can not afford 6 greenbeams. (not yet anyways)
I have also read some people have gotten shock when flipping them over, what is a good veg light to avoid this?
Thank you so much for this great thread!
But after reading some posts near the end, its does not seem worth it. What about running them in a vented cool tube? It would seriously reduce radiant heat, and allow the plants to be much closer to the bulbs. Has anyone tried that? Or is trying it now, so that i may follow?
The thing is, i am trying to do this the most economical way as i can, if i can run vertical lights in cool tubes, using the ATS combo, i can easily wire in a cold flop, and save a lot of money.
If running a hoodless 315 is not to be, can a single greenbeam cover a 4x4 2 plant scrog? I would not mount the light on the ceiling, it will be adjustable. Each scrog setup, (i would have 3) would be housed in its own enclosure made from pvc pipe and panda film, so it would have good reflective properties. If i am forced to scrog, i would like have each plant have its own 3x3, however, i can not afford 6 greenbeams. (not yet anyways)
I have also read some people have gotten shock when flipping them over, what is a good veg light to avoid this?
Thank you so much for this great thread!
Those fixtures create an oblong light intensity pattern iirc so it would probably work well mounted sideways in the space. It will provide more useable light & less heat than your 400w.
Dunno about the vert stuff or greenbeams but you probably want two reflectorized 315's to do a 4x4 scrog, either the pgz or mogul lamps. Figure 35-45 watts per square foot. If you're very handy you can convert an ordinary reflector to twin pgz lamps as I have.
As you say, flops must be cold because of the protection circuitry in the ballasts.
Anyone know how to remove the transformer on the LEC 630 so I can use it on 240v. A schematic would be nice ..
I haven't fiddled with one and can't find a schematic, but a couple of good close-ups might work.
Wanted to see what I'm dealing with before I broke it down. There are 2 Advanced Phillips Ballast with a big transformer. I'm assuming the hot 120v goes into the step up then out to both 240V Ballasts. Last time I had the ends open none of the wiring was labeled. I will prob have to trace it out. Should be fairly easy.
The ballast wiring is color coded & there's a schematic on the label. Should be easy.
Thinking of trying these 315 watt to cut down on heat issues during the summer....
Think replacing 6 DE's for 12 315w systems would cut down on heat?
Got a quote from Welthink for $1000 shipped for 12 315w digital remote ballasts...
Not really liking that all complete systems have an integrated ballast....
Think replacing 6 DE's for 12 315w systems would cut down on heat?
Got a quote from Welthink for $1000 shipped for 12 315w digital remote ballasts...
Not really liking that all complete systems have an integrated ballast....
I was referring to the step up. How that is wired into the system. The wiring on it has all tan wires. I will have to trace it out to see where ea wire goes.
sounds like a good deal.... i'm running the wellthinks with socket adapters, all good. imo you may want 3x 315 per 1kw DE, that's what i've seen compared to for flowering under DE's....
you are talking about a bloom room, right krunch?
Yes, bloom room...
3 per 1k of DE? I have em dialed down to 600w because of height problems...
You bought the remote ballasts?
3 per 1k of DE? I have em dialed down to 600w because of height problems...
You bought the remote ballasts?
If they're 1000w DE's you'll have ~2/3 the total heat. Dunno that it'll grow as well as the DE's which are supposedly better than 1000w conventional systems.
ya i got some remote wellthinks going, krunch
if you hven't been cranking the 1000w DE HPS up all the way i'm sure 2x 315s will be comprable.... but 3x per would really compare to them at full blast imo
if you hven't been cranking the 1000w DE HPS up all the way i'm sure 2x 315s will be comprable.... but 3x per would really compare to them at full blast imo
Any hood suggestions for getting 6 over a 4X8? Battling height restrictions, so that Cyclops or any kind of high bay fixture would not be feasible to run...
Bro I think 6X 4X8 is waaaayyy overkill, check out Scrappy-do's results with I believe 4 over a 10X10? I could be wrong on his set up but he got pretty amazing results for what he was burning.
Huge has a very nice room with both 315 and DE lights.
I'm not seeing lower temps with the LEC 630. I was using a 600mh to veg with. Replaced it with a 630. It can still get pretty toasty in there.
I'm not seeing lower temps with the LEC 630. I was using a 600mh to veg with. Replaced it with a 630. It can still get pretty toasty in there.
Twin 315's over a 4x4 give excellent results. That's ~40w/ sq ft. Infrared output is quite low so plants are happy much closer to the light than with hps.
You can use inexpensive batwing reflectors for the mogul lamps or the pgz lamps on adapters if you're set up to cool open reflectors.
Hi CK,
I've been using a lot of tool, but one great too is made by Sunlight Supply. It can be found here
I input dimensions for high reflectivity of walls and ceiling using the 94% diffuse reflectance of Orca film, which is what I've been calculating with. I left the floor reflectance at the default of 50% because floors (especially when covered) don't offer much. I used 7.75 foot ceiling, 1 foot "hang" for the fiture, 4x4 room wall dimensions, with the plane of "working height" to 4.75 yielding a distance of 24" from the plant canopy - my experience, this is the key variable concerning height/lux calcs.)
Setting a minimum target goal of 50000 room lux, with 33000 lux and 315 watts for the GB and the Pilips bulb, and a circular shape for the hood, and 90 degree angle for vertical hanging position, it yield the following:
Average Illuminance: 50874 lux
Number of Reflectors: 1
LPD: 35.56 W/ft sq
Pretty much dead on for what you would like, imo. You could go up to 75000 lux for illuminance, but the return it yiels 101748 lux, which is way over the 90000 "top limit" to avoid doing damage to the plants.
There are a lot of good tools and calcs out there for calculating this sort of thing, but this one is very handy for doing "what if" scenarios.
My recommendation is going with one light, and if you do, you might as well go top shelf with the GB.
