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I found out the hard way, with the first one I hooked up lol.

That happened to me lol, had to buy another one. I like those fans they are really quiet.

I hooked up 4 fans in parallel and they all ran slower then normal, so put them in series and they all ran at normal speed. I wasn't Shure if the old phone charger would over heat. Thanks for your input old med user. Your right they were .24a each, at.96a I thought I was cutting it to close to...

I have 4 artic f12 120mm fans that run at 0.24ma, can I run all of them on a 1000ma charger? I'm wondering if it's to close to the max?

Maybe you can mount a lnline fan to the front and pump warm air into the tent with a dryer vent hose.

Those type of heater have coils that light up red when heating up. They might Hermie on you when it's dark.

If you don't trust the bulb use one of those electric radiant heater, just make Shure you put tape on the power switch to block out the light. They work real good in a small room.

What I understand the bulb has a heating element in side, the kind you would find in a electric oven. I've ever had a plant turn Hermie or die on me. They clam to give off some infrared light,if you point it away from you plants they should be fine.

I made a bracket out of sheet metal in the shape of an L,and drilled a hole on one side of the L to stick the wire through.Then I mounted it to the wall, with the other part of the bracket on the side of the bulb.that way the bulb doesn't touch the side of the wall. You can put two screws in the...

a lot of good info,thanks guys. It's a little over my head, but still appreciated lol.

I was thinking about using single heatsinks on each light mounted on a aluminum 12" x 12" sheet. My build would be 12" x 12" with a 4" vent attachment on each side. Was thinking about putting up a build,so you can see how it's made.

I'm pretty good at wiring and building, so i thought I'd try my hand at making a led grow light out sheet metal, that vents though the light. Would adding two 120mm intake fans on the back of the light make a difference? Who wants to pay a thousand for the same type of light.

Thanks for the input guys, your help is much appreciated.On one of growmau video's he said that a active cooling needs only 6"x 6" per cob to cool properly,I thought by adding two together I would get all most a 12" x 12" surface. Would this type of cooling still be considered passive?

The original pic from eBay. I'm a newbie when it comes to LEDs. My cab uses a 250w hps with a cool tube that vents out the cab.Trying to bring down the power consumption. I was thinking that it would be cool if I could vent out the heat off the heatsinks through the exhaust. I haven't got the...

My cab is 3'x3'x5' , the bulb heats up the ambient air in the box real nice. The one I use is 150w. I used a ceramic socket in case the end of the bulb got hot. I use a 250w hps with a cool tube, so I don't get much heat in my cab on those cold nights.

I have one in my grow cab they work great on cold days. I have it on it's own line with a dimmer switch hooked up to regulate the heat. The kind dimmer you use to replace the light switch in a room. I placed mine facing away from the plants,never hurt any of my plants. Hope this helps.

That's cool Cletus Clem, very ingenious man.

Their about 1" thick with fins. I chose the 3070 because of the watts. I'll have to get back to you on the weight.what about removing the heat with the exhaust?