This is what I always disliked with LEDs - I couldn't tell that there was something going on with the plants while the problem was still relatively minor.
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Philips 315w CDM Elite (CMH)
- Thread starter rives
- Start date
This is what I always disliked with LEDs - I couldn't tell that there was something going on with the plants while the problem was still relatively minor.
Yep. 315's & all of the philips CMH have very high color rendering index. Not to mention that the orange glow from HPS is a dead giveaway because basically nobody uses 'em except for growing. LED's are the same way with purplish light.
Went for a walk in the evening awhile back, spotted another grower in the neighborhood because of the orange glow coming around the curtains... Even here where it's legal stealth is still a good idea. No weird colored lights, no smell, no problems.
thanks rives ill be with you guys when i get everything together,but it might take a while since its not a small amount of money..good night and good luck
Gloomshade
Member
I don't even think its debatable, I think that without a doubt the 315w outperforms a 400w HPS. Its actually possible that it may outperform a 600w HPS, at that point there is some debate, suffice to say that it is comparable to a 600 opinions differ on whether it is better or worse, but its in the same league... But 400w HPS gets murdered.
Fishywater
Member
Thanks
Yea, what GS said.
The difference in just the brightness is unreal, not to mention the color spectrum.
I believe that I'm in trouble with the stretch.
I'm going to have to get creative with some moving and bending to keep things from getting too close to the light.
I still keep my old ballast and lamps for emergency backup.... but the 315 is the SHIT!
Woah really, coz from what I have read all was positive just it still was suggested that a HPS is better for flowering.
Do you use different bulbs for veg and flower? I mean there is the 942 and the 930. I suppose the 930 would be enough?
Fishywater
Member
I am using the same lamp for veg and flower.
The one HUGE advantage (for me at least) is the heat factor.
These run SO much cooler than MH/HPS
Now with my thermostatically controlled A/C unit pumping the cool when needed, I have a perfect environment for growing!
Gloomshade
Member
My lights came with the 930 bulb, stupidly expensive for me to try to replace bulbs down under. Theoretically the 942 is meant to be better for veg, and there's some evidence that the 942 might even be better for flower. I dont have any experience with the 942, but i can confidently say that either bulb will grow you some awesome buds.
I've replaced Mars II 900s -5watt diodes(450w) with these 315(350w) 930's, they use 100 watts less power and produce explosive growth. I'm expecting my 3rd light to come in the mail tomorrow hopefully.
I'm also getting another D-Papillon. The 315w Agro that I've been using is the best grow light I've tried. The only reason you should use other types of light sources is if you're short on cash.. even then most of the "good" LED fixtures are more expensive. I'm never going back to HPS/MH.
Some Pagoda
Some Pagoda
Looks awesome! Can you post a canopy shot and describe the dimensions you're able to light up?
I'm considering shelling out for a Cycloptics unit for my own personal flowers. People I know in CA are using the 315w cmh specifically for veg and are saying theyre no good for flowering.. But then you guys are posting shit like this and reporting ~1lb harvests!
Nice buds! Sounds all awesome maybe I gonna buy my d papillion also in the coming weeks!
My two 315W lamps are insane. I wasn't ready for the growth explosion and I'm afraid this Master Kush clone outgrew the 5 gallon pot I have it in. It is about 3.5 foot around and trained down like crazy. It's my 1st run in my new room with this light.
I can't seem to figure out why the lighter color for new growth. Its still growing fast, but won't turn lush green. I hope my lights aren't too close cause I don't have much more room to raise them. They are at 20 inches below the light.
Day 1 of 12/12
Day 7 of 12/12
Day 11 of 12/12 (today)
I can't seem to figure out why the lighter color for new growth. Its still growing fast, but won't turn lush green. I hope my lights aren't too close cause I don't have much more room to raise them. They are at 20 inches below the light.
Day 1 of 12/12
Day 7 of 12/12
Day 11 of 12/12 (today)
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TBM, may need to up ur ppms or feeding frequency, plant may just have a high metabolism from the light source
Been harvesting my SOG 2x4 tables with over a #
These little baby's below are a little over 5' and are on my 8x315w multi-kelvin side. Going back to tables though, suits my style better. Oh and yes, I love ricehulls for a top cover, natural form of potassium silicate release and great for trichoderma fungi.
Been harvesting my SOG 2x4 tables with over a #
These little baby's below are a little over 5' and are on my 8x315w multi-kelvin side. Going back to tables though, suits my style better. Oh and yes, I love ricehulls for a top cover, natural form of potassium silicate release and great for trichoderma fungi.
I thought so, and have been feeding with every watering, but I just had to flush her out due to EC going over 2.0. My meter only goes to 2.0. After I flushed a couple nights ago the final runoff was down to 0.9-1 EC. I was planning on feeding around 1.0-1.2 EC every other watering to prevent salt buildup.
Think I need more than that? I need to give this thing about two gallons every 2 days to get a decent 15-20% runoff. pH is also 6.1. I'm definitely not used to big plants and their needs yet. I'm thinking of going a gallon of water a day.
The problem is that she was originally in a 2 gallon pot of miracle grow soil with time release food, so I don't know what to feed her. Full strength is definitely too much. I've been monitoring my feedings and I will be monitoring my runoff when I water to see how much she is eating. I've had issues like this before but was able to correct them, this one won't go away and is bugging me. Another thing I noticed was that at the end of the lights on cycle, she starts to look droopy like water is lost. The plant has water, however, so my next theory is the VPD in the room isn't right when the lights are on. I am at 77 degrees normally with about 40% RH. I need to get my RH higher.
Think I need more than that? I need to give this thing about two gallons every 2 days to get a decent 15-20% runoff. pH is also 6.1. I'm definitely not used to big plants and their needs yet. I'm thinking of going a gallon of water a day.
The problem is that she was originally in a 2 gallon pot of miracle grow soil with time release food, so I don't know what to feed her. Full strength is definitely too much. I've been monitoring my feedings and I will be monitoring my runoff when I water to see how much she is eating. I've had issues like this before but was able to correct them, this one won't go away and is bugging me. Another thing I noticed was that at the end of the lights on cycle, she starts to look droopy like water is lost. The plant has water, however, so my next theory is the VPD in the room isn't right when the lights are on. I am at 77 degrees normally with about 40% RH. I need to get my RH higher.
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@tbm
I usually feed between .9-1.2 every dayso that should be fine. U may want to try splitting up that 2gallons into 1gallon a day like u said, my massive mother drinks that kind of water so that sized girl shouldn't be needing like that I would think.. Are u in coco? Enzymes that'll help managing the salt build if there is.
Curse mircale grow!!!
This girl uses 2 gallons a day and she's in a 3gallon grow bag, run 2 315s over her.
I usually feed between .9-1.2 every dayso that should be fine. U may want to try splitting up that 2gallons into 1gallon a day like u said, my massive mother drinks that kind of water so that sized girl shouldn't be needing like that I would think.. Are u in coco? Enzymes that'll help managing the salt build if there is.
Curse mircale grow!!!
This girl uses 2 gallons a day and she's in a 3gallon grow bag, run 2 315s over her.
Fishywater
Member
Dang.....
Lowman
Member
so...I am able to get either of these units...and also a two bulb in one hood horizontal unit as well. The single bulb horizontal unit has a small hood so it can be used in a green house to not block natural sunlight. It is cheaper than the single bulb vert unit. The vert unit is $40 more. Anyone have any experience with which one is better? Or opinions?
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Gloomshade
Member
I own the vertical unit. 3 of them as of today, 4 sometime next week. Its a good quality piece of kit. I'm unfamiliar with that horizontal version, is it still running a phillips ballast or is it a cheaper chinese version? With only $40 difference I would be looking at the internals and if they are both high quality versions then whichever suits your grow space will work well I think.
As for the double bulb units....I personally don't see the point. The intensity you get running a single unit over a 3x3 is pretty awesome already, and there isn't enough footprint increase from a double bulb unit to warrant buying one of those over 2 singles, in my opinion. It all depends on your application, but I feel most people running 315s are probably after a high level of electrical efficiency... Throwing more light/electricity at a grow will always increase output...with diminishing returns...
For me a single vertical per plant per 3x3 scrog is giving me the best growth i've ever seen with the lowest electricty i've ever used.
Below is a comparison between plasma and the vertical 315 you mentioned, the same one I own. I try not to dive to deep into the technical/scientific/numbers, lest my eyes begin to bleed...but the numbers are impressive.
[YOUTUBEIF]https://youtu.be/w4n6VZTMf04[/YOUTUBEIF]
