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A tip running with LEDs are intake at the top and exhaust at the bottom so the air can mix with the heat produced by the leds since they barely put put any radiant heat. This will also cool the leds too making the servicelife much greater.

There are some really greedy ass LED retailers that doesn't add a heatsink. They just add a flat piece of aluminium instead. Just look at this junk: http://img222.imageshack.us/i/despiece3chufy4.jpg/

You can run a computer passive but that needs proper built heatsinks with large surface-area and heatpipes. But it will still run hot to the touch since the heatexchange in a passive system is low. It could work if you let the heatsinks "catch" some of that moving air inside your growarea. The...

sweet light, just looking at the pics blinds you :) By looking at the last pic u posted, is it a heatsink I'm spotting inside the unit? Good luck with the grow, looks awesome!

If you're handy with a solderingiron and knows electricity you could make a custom LED panel fitting the case perfectly since LEDs will take max 1-2in of vertical space if you do it right.

Even tho the light itself doesn't burn the plant the light itself it can be too intensive for the plant and evenutally bleach it out like a photo. A HPS will just burn the plant with IR rather than visible light. audi024 you should watchout for hydrogrowleds... Overpriced units, and it's run...

Watch out for Hydrogrowled imo. Her business is really creepy. She was recently banned from icmag and 420magazine. http://www.420magazine.com/forums/grow-supply-product-reviews/129842-caveat-emptor-buyer-beware-hydro-grow-led.html The hard thing is getting a quality led panel with highly...

take a cutting, place it into fresh tapped water, Let it sit on a windowsill or under a light... Easiest and cheapest cloning method... Will root in 7-14 days. Adding roothormones will cut down the rooting time to approx half. Cloners will take exact the same time to clone except it will allow...

Looks like thrips damage. Its DEFINATELY a bug since the black spots are poo.

You are mixing cold air with hot air. Cold air stays at the buttom while hot air rises. The fan makes the two mix together.

Just put them under more light than 18h per day and they will eventually go back to veg.

Many people assumes that CFL doesn't produce heat but that's all wrong. 150w HPS and 150w CFL produces THE same amount of heat but HPS has higher efficiency thus making more light/w. The problem with HPS is that it produces tons of IR heat that goes thru glass making it hard to control the...

It could also be windburn. The fan pointing at the plant makes the leaves to transpire too quick(?). You will see random "burn" marks on affected leaves. My girl showed similar leaf damage as yours so I removed the fan completely. Well I'm not really sure if the fan was the problem yet since...

My first post :cool: Well this is my first grow and my female are getting some sort of deficiency I think. Searched all over for similar problem but couldn't find it anywhere so I'm hoping for you guys to help me :roll: It's about 4 weeks into vegging. Been giving it some random nutes...