How Close Can I Keep My Lights Without Light Burn?

[Stevena12345]

I was curious how far I can keep my lights apart from each other. I am running 4 600's with 2 400 cfm fans. Obviously 1 per 2 lights. My temps do not get higher any higher then 77 degrees. Currently they are about 6 inches apart on the sides and 18 inches on the ends. I was under the impression that I was in good shape. Was thinking of pumping 2 of my digital ballasts up to 750watts, but obviously that would create more heat and potential light burn. Any general rule of thumb for distances between lights?

 

[FooDoo]

When I ran aircooled 1000 watters my tops would touch the glass of the hood and not burn

 

[Stevena12345]

I meant how far should each air cooled reflector be in distance from each other. Running 600 watt bulbs.

 

[FooDoo]

What does that have to do with light burn (ie the topic of this thread)

Each 600 covers a 3x3 canopy, possibly can handle a 4x4

 

[MrBelvedere]

Generally rule is 18 inches away from top of the plants is safe. No matter how close they are to each other.

 

[jammie]

What does that have to do with light burn (ie the topic of this thread)

Each 600 covers a 3x3 canopy, possibly can handle a 4x4

So if a lamp covers 3x3, I place the lights 2-2.5 ft from each other so you have a little double coverage on the edges. iTunes has several good light meters for 99-1.99. I'm sure there's similar for android. It's help to adjust lights for equal coverage

 

[FooDoo]

Na dude. What's your growing space