400w ss gfp journal

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Re: 400w ss gfp journal

Postby SisterMaryElephant » Wed Sep 12, 2012 7:55 pm

DarkChessLord wrote:Azores, that wouldn't work because the heat is coming from the photons, not the panel itself.

Nope, the heat is coming from the heat sinks, attached to the LED drivers, inside the unit...
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
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Re: 400w ss gfp journal

Postby Powerwiz » Thu Sep 13, 2012 3:09 am

DarkChessLord wrote:Azores, that wouldn't work because the heat is coming from the photons, not the panel itself.



Of course it would work. What I believe he meant is a adapter right on the heat sink. The heat is vented out the sides and its a whole lot of it. I believe the heat build up comes from the exhaust hitting the sides of the tent and getting diffused down and up. Not all of it goes up. If there was a attachment on the side you could just straight suck it up. Then again if you did that and some consumer did not attach ducting to the side then it would end in fail. Maybe a adapter or something would work better.

I have the 800w Solarstorm and 200w Solarflare. The Solarflare generates some heat but I have the ducting right next to the heat sink. Hardly any heat in my tent since its sucking it right up. On the Solarstorm I dont. I was thinking attaching a air diffuser to funnel the air up to solve that. That would add to the width of the panel though and its already wide.
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Re: 400w ss gfp journal

Postby azores » Thu Sep 13, 2012 12:19 pm

It doesn't even need to be six or four inch round. They could make it 3x7 rectangular which would fit a standard rectangular to 4" round duct adapter which are rated to 200cfm, more than adequate for what my 400 is putting out. This way, no major redesign needed just add the 3x7 flange to each side exhaust where the vent grills are now. Not sure about the 800 but it looks like those dims would work on the 400.
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Re: 400w ss gfp journal

Postby azores » Wed Sep 19, 2012 2:06 pm

day 10 of 12/12 - all of the jamaicans started flowering two days ago. i came home from the weekend and the big jamaican had grown up too close to the light and got some leaf damage. i'm keeping it about 3ft above the canopy now. some pictures with the ss off this time...
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medium jamaican, left; auto white widow, right
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Re: 400w ss gfp journal

Postby SisterMaryElephant » Wed Sep 19, 2012 10:21 pm

3 feet is way too far, imho, but it's your grow... ;)
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
SisterMaryElephant
 
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Re: 400w ss gfp journal

Postby azores » Wed Sep 19, 2012 11:39 pm

It wasnt actually the far, it was more like 30". So much for eyeballing it. But you're right of course that's still too far and closer is better. I've dropped it back down to the two foot zone. We'll see how they handle. The jd's have been pretty fickle about it. The auto is totally unaffected.
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Re: 400w ss gfp journal

Postby Powerwiz » Thu Sep 20, 2012 12:41 am

Odd your plants dont like it close. I have my SS like 3 inches from the tops of my plants.
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Re: 400w ss gfp journal

Postby SisterMaryElephant » Thu Sep 20, 2012 9:10 am

3" is great if the plants can take the heat and you watch carefully enough to prevent burns but that also lowers the area covered. Pros and cons... ;)
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
SisterMaryElephant
 
Posts: 2633
Joined: Thu Sep 22, 2011 10:05 pm

Re: 400w ss gfp journal

Postby Powerwiz » Thu Sep 20, 2012 9:28 am

SisterMaryElephant wrote:3" is great if the plants can take the heat and you watch carefully enough to prevent burns but that also lowers the area covered. Pros and cons... ;)


Well they got so stinking tall on me. 37 36 and 30 inches. I veged at 8 inches.
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Re: 400w ss gfp journal

Postby SisterMaryElephant » Thu Sep 20, 2012 9:44 am

I know, I'm just saying that there are pros and cons for virtually every decision like that. Too high from the plants and you cover more area but you lose a lot of your intensity. Too low and you have great intensity but you lose coverage. It all depends on what you have, want and need... ;)
Disclaimer:
I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.
SisterMaryElephant
 
Posts: 2633
Joined: Thu Sep 22, 2011 10:05 pm
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