This is probably why your shit is growing slow!

how far away should cfl's be?

cowboy..bad advice isnt agaist the rules...HARASSMENT IS! leae me alone..fuck

Steph187 said:

cowboy..bad advice isnt agaist the rules...HARASSMENT IS! leae me alone..fuck

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Who is harassing? You are the one that has threatened me with violence many times. I am just pointing out the facts.

every time i post ur always saying "ur just a punk kid"..u dont kno me so its not you "just sayin facts".

Bonzi Lighthouse said:

Hersey Burn this man at the stake, everybody knows that cfls put out not heat.

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All light bulbs produce heat. If you are being serious than you have never used CFL's before.

Yeah if you guys don't stop the thread is going to be closed.

Balzac89 said:

All light bulbs produce heat. If you are being serious than you have never used CFL's before.

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True enough. My old veg room would shoot up to over 90F within ten minutes, with just my CFL's in there, without serious ventilation. OP - your plants don't "know" they will get burned if they go higher. Ask any of us who have had burned plants, because they grow right into the damn light. lol Either it was coincidental, or you might have a heat issue. If the temps are too high at the canopy, that will slow growth down. Typically though, small wattage CFL's should remain approx. 2" from your plants.

Bonzi Lighthouse said:

Hersey Burn this man at the stake, everybody knows that cfls put out not heat.

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CFL's put out MORE heat than a HPS setup, because they are not as efficient as HPS. Put six 75 watt CFL (the 500 watt incandescent equivalent ones) bulbs in a box and record the temperature before and after, you'll see

Those ballast get HOOOOTTTT!

can someone tell me how far my 42 watt cfl's should be. ive been going back and forth from 6-12 inches

I use a milk-crate reflector with 2 42 watt cfls in it for the top of my plants and i currently have them 4 inches away. anywhjere from an inch to 5 inches is what ive read.

thanks a lot!

NoDrama said:

CFL's put out MORE heat than a HPS setup, because they are not as efficient as HPS. Put six 75 watt CFL (the 500 watt incandescent equivalent ones) bulbs in a box and record the temperature before and after, you'll see

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Off with their heads.... Let it be known that CFL's put out no heat and the world is flat.

GShocker said:

can someone tell me how far my 42 watt cfl's should be. ive been going back and forth from 6-12 inches

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i used 6 23watt bulbs and had them anywhere from 1-2 inches. with a fan blowing directly over the bulbs the heat was dissipated very fast. I would move them up once the plants touched them. the bulbs were cool enough to the touch that they didnt scorch my plants.

I leave mine on 24/7..i could touch them allday. Its the ballast that get hot.

Steph187 said:

I leave mine on 24/7..i could touch them allday. Its the ballast that get hot.

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ballests for HPS get very hot too. Difference being they can be placed outside the grow area, so do HPS generate less heat in the room than CFL's?

...OP, watch 2:28 into this video.

[youtube]_a-uPlqss_0&feature[/youtube]