[medicalmj]

Been hearing about growers taking out the glass and cooling the whole room if need be. Does not having glass increase gland production.

All glass reduces UV rays (some say UV = more trichs), does that have anything to with it, or does glass just reduce light output?

[supermanlives]

i didnt notice any diff in my last run. i did a bare bulb grow and had another grow in same room aircooled. buds were the same to me.

[kindfarmer420]

i have a sealed room with a mini split cooling the room UV increases THC-V..the glass on reflectors block out all UV light.. this is what i do day 1-14 of flower i use metal halides ( reason i do this is because the plants are still kinda vegging for the first 10 days or more depending on strain and i feel that it keeps the tops more even) weeks 3-6 i use HPS then the last 2 weeks i switch back to metal halide to increase trich production

i heard u get better lumens obv withouot glass but u get more cooling and u can put them closer to the plants with glass so it depends on ur room and ur environment if u can handle it without glass do it.

to be honest.. if u have everything else dialed in.. then ya it makes a difference.. but if u have nothing dialed in .. then ur stuck were u r !

I think to get to the point of where you need to remove the glass to up your game would take years upon years. If this is the limiting factor of why your quality has been stagnant then you are doing a whole lot right.

Originally Posted by medicalmj

Been hearing about growers taking out the glass and cooling the whole room if need be. Does not having glass increase gland production.

All glass reduces UV rays (some say UV = more trichs), does that have anything to with it, or does glass just reduce light output?

Running HPS, there is no issue or difference with regard to UV radiation since mine aren't putting any out.

That said, I prefer no glass for a couple of reasons. Electricity is expensive and my basement room is COLD. Why would I cut off heat that's coming out of the lights I (was) paying to run, to then have to add back heat? I switched to vertizontal parabolics and really, REALLY love those. I can get my room up into nice, tropical temperatures. Only problem is when I walk in my glasses fog up.

Glass does reduce the amount of light getting to the plants, there is no way around that. It can be used to help acclimate plants, though, but I don't see, fiscally speaking, a good reason to use glass in my particular scenario. If I were in an area where keeping things cool were my problem *then* I could understand it.

[etinarcadiaego]

Originally Posted by medicalmj

Been hearing about growers taking out the glass and cooling the whole room if need be. Does not having glass increase gland production.

All glass reduces UV rays (some say UV = more trichs), does that have anything to with it, or does glass just reduce light output?

I've done it, not a good idea in my experience, especially using Metal Halides or Sunpulse lamps, as the glass is what filters much of the UV light. I had pretty severe bolting in the canopy, with a fair amount of bleaching. Topmost buds were burnt looking and crisp, despite canopy temps never exceeding 78F.

Just my experiences man

[etinarcadiaego]

Oh, and on a side note. There is a lot of talk about ways to increase resin production, and I know, as you mentioned, one of them is through exposure to UV light during the bloom cycle.

I never noticed that, and to be honest I think that while there are many theories out there about ways to force a plant to produce more resin, I've never seen any of them make a significant, even noticeable, difference.

In my experience the best, safest, and most consistent way to get your plants to reach their genetic potential in terms of potency is just to keep them healthy and happy. Personally I don't really believe that some trick or special lighting/fertilizer will make any difference in terms of potency; and my experiences support that conclusion.

Consider the poppy plant, for example. As you may know, the global pharmaceutical industry relies completely on poppy plants as the source of the precursor compound called Thebaine needed to make many of the narcotic analgesic drugs used to treat pain. While the vast majority of these plants are grown outdoors in countries like Turkey, there have been, and still are, many varieties grown indoors in massive multi-level warehouses. Many studies have been done, some of which are available in print if you have access to EbscoHost, to try to increase the "potency" or production within the plant of the desirable alkaloids.

Those studies/experiments concluded that while the variety being cultivated is of the utmost importance, that there is no way to increase alkaloid production outside of growing the plants in stress-free, ideal conditions. While the two plants are very, very different from a botanical perspective, the intentions of the cultivator's are quite similar, and inferring my conclusion from their's doesn't seem like much of a stretch.

Anyways, I just thought I'd share my experience and knowledge with you, as this was a subject I too once had a great amount of interest in. These days I just strive to keep my garden stress free and to keep the variables and conditions I have control over as close to perfect as is within my power.

Good growing

- Et

i think using cold water to flush ur plants has more of an affect on resin production then the glass lol.. flushing with cold water.. makes it seem like winters comin on in with the soil temps getting cold.. which in return makes the plant think its at its last chance to pull in some pollen to keep around for the next years. so in turn shouold get more resin.. u wont be able to tell with the eye.. but i had a friend do cold water flush and warm water flush . and got better lab results with cold water flush . so ive kept to that and no problems.