air cooled lights or hoods with no glass??? which is better???????

[smokey dabear]

i have six great white hoods with no glass an 1000w hps bulbs with a mini split ac to keep room temp around 75degrees a day.... i heard glass on the hoods restricts lights by 25% ???is that true??? jus curious if i willget better yeild????? let me kno!!!!!!!! thanx

 

[frmrboi]

although 25% seems high it's up there. I'd rather have none if possible as it also filters out some of the UV light to.

 

[Kerovan]

no, it's not true that glass reduces light by 25%. glass reduces light by 1/2% for each 10mm of thickness. So the reduction in light thru glass in a hood is pretty much negligable. But if your grow room is fine without glass, fine. If you have to use a glass lens, you are still fine. It is pretty much a moot point.

 

[smokey dabear]

no, it's not true that glass reduces light by 25%. glass reduces light by 1/2% for each 10mm of thickness. So the reduction in light thru glass in a hood is pretty much negligable. But if your grow room is fine without glass, fine. If you have to use a glass lens, you are still fine. It is pretty much a moot point.

yea jus curious thanx

 

[smokey dabear]

although 25% seems high it's up there. I'd rather have none if possible as it also filters out some of the UV light to.

yea i jus kno u have to have a good ac to keep ur room cool beacause thos light put off a lot of heat

 

[Shrubs First]

how many BTU minisplit? I'd say 18,000-20,000btu is where you want to be.

I run hoods with no ducting and a mini split and I'm fine.

 

[smokey dabear]

how many BTU minisplit? I'd say 18,000-20,000btu is where you want to be.

I run hoods with no ducting and a mini split and I'm fine.

yea i got a 24000btu seems to be keepin up im jus trippin tho when summer comes i dunno if that ac will keep up i dont wana burn it up