Club 315w lec

[NugHeuser]

I just picked up a 4x8x6.5 tent for flower only and need to grab some lighting. Also, I need to keep heat down as I don't want to run AC.
Right now, running 620w of Aglex lighting and tent is getting up to 81 with exhaust running full blast. Problem is....thats only lighting one half of the tent. Once I have the tent full on both sides...I'd never be able to cool it down.
So, I've been considering all options and am leaning to CMH because they seem to work well and cheaper than quality LEDs. I'm trying to keep my costs down to keep the wife off my case lol.
I was looking at the SilberStar 315 vertical hood with the separate ballast and Philips 3100 bulb for about $400 delivered.

Square Wave 315W CMH SilverStar Fusion Bright Ballast System

The Silverstar CMH 315W reflector is the latest innovation in the Silverstar line and is designed for Ceramic Metal Halide technology. Like all the Silverstar products, this reflector is made from highly reflective German textured aluminum for excellent light uniformity and diffusion. It has a...

www.growlights.ca

Figured I would get two and watch the heat. If it's manageable...get a third one and have a decent light overlap. Or I could throw in a one of my LEDs in between them with only the bloom switch running.
I'm running a 6" AC infinity fan and 6" carbon for exhaust. Also have a 6" fan for intake when it gets too hot.
Any idea of how much heat buildup I can expect with 2 or 3 in a tent this size?

So you're already a little warm with a 620w (at the wall) blurple light? Are you experiencing summer or winter in your region?
I've got plenty experience with 4x8 and cmh, just wondering for starters what season your area is currently in, because that does affect different setups

 

[TintEastwood]

Pardon Our Interruption...

 

[tst2015]

So you're already a little warm with a 620w (at the wall) blurple light? Are you experiencing summer or winter in your region?
I've got plenty experience with 4x8 and cmh, just wondering for starters what season your area is currently in, because that does affect different setups

It's winter here but temps got to 0 celcius today so pretty nice for region. Normally, it's anywhere between -15 to -30 this time of year.
The temps in the tent ended up coming down to about 78-79 with the 620w running. The temps had gotten up higher when I had another light going in there (110w) ....forgot to mention that in my original post. Once I shut that one off....temps came back down to 78-79 after a bit.
I'm running Aglex lights. Between the two lights (620w)...there are 6 COBs and a bunch of reds/blues.
I'll likely have to put a bigger extraction fan and carbon filter in before summer for sure.
The CMH I'm looking at have remote ballasts with vertical bulb in hood. I'm not sure how much heat the attached ballasts kick into the tent so I figured keeping ballasts out of the tent should help a bit.
Otherwise, I could get cheaper CMH with horizontal hoods with attached ballasts. This would be nice because I could get it closer to the top of the tent if needed.

 

[NugHeuser]

It's winter here but temps got to 0 celcius today so pretty nice for region. Normally, it's anywhere between -15 to -30 this time of year.
The temps in the tent ended up coming down to about 78-79 with the 620w running. The temps had gotten up higher when I had another light going in there (110w) ....forgot to mention that in my original post. Once I shut that one off....temps came back down to 78-79 after a bit.
I'm running Aglex lights. Between the two lights (620w)...there are 6 COBs and a bunch of reds/blues.
I'll likely have to put a bigger extraction fan and carbon filter in before summer for sure.
The CMH I'm looking at have remote ballasts with vertical bulb in hood. I'm not sure how much heat the attached ballasts kick into the tent so I figured keeping ballasts out of the tent should help a bit.
Otherwise, I could get cheaper CMH with horizontal hoods with attached ballasts. This would be nice because I could get it closer to the top of the tent if needed.

Yeah if you do get any cmh I'd go with the remote ones with a vertically oriented bulb. The vertical ones have better light output.

I think you just need a bigger inline fan on your carbon filter.
Come summer time you'll probably still have heat problems if you cant crank the AC in whatever room your tents in but itll help using a bigger fan.
I use a 10" hyperfan and filter on my 4x8 during summer with a 6" intake and AC in the area and my highest temps I wanna say in the dead of summer reach 86 and I sometimes have to dim my ballasts a little. Probably average 81 throughout the warmer seasons with my setup. Running 3- three cob rails with 2 315's oriented like so, [l o l o l]
Hopefully that helps

 

[tst2015]

Yeah if you do get any cmh I'd go with the remote ones with a vertically oriented bulb. The vertical ones have better light output.

I think you just need a bigger inline fan on your carbon filter.
Come summer time you'll probably still have heat problems if you cant crank the AC in whatever room your tents in but itll help using a bigger fan.
I use a 10" hyperfan and filter on my 4x8 during summer with a 6" intake and AC in the area and my highest temps I wanna say in the dead of summer reach 86 and I sometimes have to dim my ballasts a little. Probably average 81 throughout the warmer seasons with my setup. Running 3- three cob rails with 2 315's oriented like so, [l o l o l]
Hopefully that helps

I've got the AC infinity 6" with the adjustable controller running in there right now. I can plug a second fan into that same controller but it has to be the same type. So I wonder if I just add a second 6" exhaust fan and carbon filter in there (which I already have) will do the trick?
I like the controller but to step up to the 8" fan and filter would cost me about 500 bucks here in Canada.

 

[NugHeuser]

I've got the AC infinity 6" with the adjustable controller running in there right now. I can plug a second fan into that same controller but it has to be the same type. So I wonder if I just add a second 6" exhaust fan and carbon filter in there (which I already have) will do the trick?
I like the controller but to step up to the 8" fan and filter would cost me about 500 bucks here in Canada.

Yeah that's sucky with the higher prices in Canada. Yeah I'd say if money is an issue for now you'll just have to try a 2nd set of exhaust and just see what happens.
The problem with using a carbon filter(which I always recommend to use) is that itll take your 6" inline fan and by the time it has to push air through a filter, carbon and ducting, the air movement is significantly lessened. So it's always a good idea to use an overkill fan WITH a speed controller in my opinion.
But you gotta do what you gotta do, maybe the double set will make a big difference. Good luck to ya

 

[tst2015]

Yeah that's sucky with the higher prices in Canada. Yeah I'd say if money is an issue for now you'll just have to try a 2nd set of exhaust and just see what happens.
The problem with using a carbon filter(which I always recommend to use) is that itll take your 6" inline fan and by the time it has to push air through a filter, carbon and ducting, the air movement is significantly lessened. So it's always a good idea to use an overkill fan WITH a speed controller in my opinion.
But you gotta do what you gotta do, maybe the double set will make a big difference. Good luck to ya

Yeah ill have to give it a try. Then if I need to step up to a bigger fan I will. Thanks for the help!

 

[ISK]

I'm currently growing 4 plants in a 4.5 x 4.5 x 7 ft tent with a 600 watt HPS and I'm about 3 weeks away from harvest.

My buddy at the grow shop suggested that I use my 315 CMH for the last 2 weeks to finish off my crop.

Not sure if this would be a good idea or not...thoughts

 

[.Smoke]

I'm currently growing 4 plants in a 4.5 x 4.5 x 7 ft tent with a 600 watt HPS and I'm about 3 weeks away from harvest.

My buddy at the grow shop suggested that I use my 315 CMH for the last 2 weeks to finish off my crop.

Not sure if this would be a good idea or not...thoughts

Trying it out now between 2- 1000w hps. Harvest in a week or 2. Will see if it makes a difference.

 

[tst2015]

I'm currently growing 4 plants in a 4.5 x 4.5 x 7 ft tent with a 600 watt HPS and I'm about 3 weeks away from harvest.

My buddy at the grow shop suggested that I use my 315 CMH for the last 2 weeks to finish off my crop.

Not sure if this would be a good idea or not...thoughts

I was running under some Aglex LED for their whole life. Decided to move them under the 315cmh to see if it would make any difference in the last couple weeks. They were pretty frosty when I put them in but they seem to be putting on a little more.
It's only one time with a new to me strain so I can't say for sure either way if it made a difference. But it didn't hurt anything.
These pics are after 5 days under the 315cmh

 

[Lucky Luke]

I'm currently growing 4 plants in a 4.5 x 4.5 x 7 ft tent with a 600 watt HPS and I'm about 3 weeks away from harvest.

My buddy at the grow shop suggested that I use my 315 CMH for the last 2 weeks to finish off my crop.

Not sure if this would be a good idea or not...thoughts

CMH does add THC..

 

[Blue back]

Under 315 the whole flower cycle. Wedding Cake, Garlic Breath and forum cut GSC. 2 315's on 4x4.

 

[Blue back]

Plenty of size too. Rock solid Wedding Cake cola.

 

[Logan Burke]

Has anyone noticed that they need to increase/decrease their nutes under CMH lights as compared to regular HID MH/HPS? I keep finding that I need to raise the ppm's much higher than when under typical HID's, I'm suspecting that the spectrum perhaps makes the plant consume more of certain nutrients, but really haven't been able to find a wealth of info on the net about this.

 

[Neoangelo147]

12 plants under 2 Vivosun 315 CMH. Week 5 of flower.

Strains: Blueberry, LSD, Venom OG, Lemon Tree.
Fertilizer: Full organic dry amendments from Dr Earth flower girl and 5 tomato. EWC, dolomite lime, kelp meal, Recharge
Soil: Black Gold
Pot size: 3 gallons
Grown in: 2 3x3ft trays.
Canopy size: 4ftx7ft

 

[tst2015]

12 plants under 2 Vivosun 315 CMH. Week 5 of flower.

Strains: Blueberry, LSD, Venom OG, Lemon Tree.
Fertilizer: Full organic dry amendments from Dr Earth flower girl and 5 tomato. EWC, dolomite lime, kelp meal, Recharge
Soil: Black Gold
Pot size: 3 gallons
Grown in: 2 3x3ft trays.
Canopy size: 4ftx7ft


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Nice. I've got a 4*8 tent. Was thinking about putting in a 3rd 315 for full coverage...but yours looks like it's doing well with just 2

 

[Blue back]

2 315 will cover a 3'x3' area. I run 2 on a 4'x4'. 4x8 u would actually wanna run 3 if not 4 for total coverage. Neoangalo147 looks great for only 2 though no doubt

 

[.Smoke]

Trying it out now between 2- 1000w hps. Harvest in a week or 2. Will see if it makes a difference.
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Results...

 

[gr865]

2 315 will cover a 3'x3' area. I run 2 on a 4'x4'. 4x8 u would actually wanna run 3 if not 4 for total coverage. Neoangalo147 looks great for only 2 though no doubt

I run two 315's in a 4x4, but I believe that two should cover 3x6 very well.

 

[Neoangelo147]

2 315 will cover a 3'x3' area. I run 2 on a 4'x4'. 4x8 u would actually wanna run 3 if not 4 for total coverage. Neoangalo147 looks great for only 2 though no doubt

This is my 2nd round running these lights. Something I learned from previous runs with these 315’s is you want to keep your canopy as low/even as possible. These lights don’t penetrate well so growing trees will produce fluffy bottom buds. Scrog or LST seems to work good with these lights. Also something to consider is genetics and healthy plants. If genetics aren’t there no matter what light you use you won’t see the full potential. Plant health is another important thing to consider.