Quote Originally Posted by randyfolds
Glass definitely is not conductive. .................. While that is going on though, you are also filtering out harmful UVB and UVC radiation that is wreaking havoc on your plants DNA.
Glass definitely is conductive for heat.... it's just a tad slow at doing it. You're probably thinking about electricity, which it can not conduct.

Yeah, glass will block those two kinds of UV light since they're weaker than UVA.... but cannabis produces more resin when exposed to UVB/C just as long as it's not too much to do harm to the plant. Besides, it would only be used for flowering plants that will most likely be killed for harvest. Mothers and clones should be kept safe from it to preserve the DNA.


Anyways, about using a reflector with glass... as long as you got enough ventilation to suck out some of the initial thermal heat produced from the burning bulb, it'll at least keep that extra heat from bothering the plants. But that thermal heat still does transfer through the glass as well as the light which makes heat too. Besides, it's also a good protective covering for the bulb so insects, water, and fast growing plants don't touch it.


But yeah, if you wanna see if it works, just put your hand there at the exhaust coming from the vented hood. If the air feels warm, then you know it's taking away some heat that would have otherwise been left for the regular grow chamber's ventilation to take care of.