1000 HPS question?

[saltypimp]

Hey Guys -

I have 2 1000 watts lijgthing 5 x 10 ( room is 11 x 9 though)

My ilghts have glass shielding and cooling with 745 CFMs...

My question is, how far away should i keep my light from my plants since this galss ruins the lumens... should i even use this glass... and how far does the footprint of a 1000 go to with using this glass...

I was hoping to get at least 5 x 5 per light... but not sure with this glass blocking some lumens... would 2 "glassless" lights heat up a room of 11 x 9 x 8 = 864 cu. ft.

thanks

saltypimp Reviewed by saltypimp on 04-29-2008. 1000 HPS question? Hey Guys - I have 2 1000 watts lijgthing 5 x 10 ( room is 11 x 9 though) My ilghts have glass shielding and cooling with 745 CFMs... My question is, how far away should i keep my light from my plants since this galss ruins the lumens... should i even use this glass... and how far does the footprint of a 1000 go to with using this glass... I was hoping to get at least 5 x 5 per light... but not sure with this glass blocking some lumens... would 2 "glassless" lights heat up a room Rating: 5

[stinkyattic]

Those would heat the room; the lumen loss through an air cooled hood is minimal and the benefits of a cooler/coolable light far outweigh the slight lumen drop. Keep the lights as close as you can before seeing heat problems (upcurled leaf edges and/or pale striping between veins). I can run my air-cooled lamp about a foot closer to the canopy than my non-air-cooled one; you will have to find that sweet spot for yourself.
Your footprint should fall between 4 and 5 feet.

[xcrispi]

Leave the glass in em
745 cfm is more than enough to cool a pr. of 1000s .
I cool 3 -1000w inline w/ only 630 cfm .
Run em as close as you can get them w/o causing heat probs, or bleaching either one . I use a laser thermometer and shoot leaf surface temps trying to keep them below 78 degrees . Cheap useful tool for $20.00 Google em .
Crispi :stoned: