Son of Hobbes tests Mars II 1600W 5W LED + Mars Grow Tent + Mephisto Genetics + Terrestrial Bean Com

[Bilbo]

Eitherway, we know that the right amount uvb light is a helpful to plants' growing.

Tina, we DON'T know if UVB is helpful

 

[Feenix]

Tina, we DON'T know if UVB is helpful

Good morning Tina, Bilbo, all,

Granted that a single or a few uvb leds confined to the height limitations of the entire lamp may or may not be useful. But, It has been shown that UVB bulbs used within the height effectiveness of the wavelength of that bulb
is useful for trich growth. You can see this when you compare trichomes in the effected area vs non radiated areas.
Whether it boosts potency is harder to determine without a benchmark potency to compare. Modern testing now makes that possible.

This guy seems to have a handle on the chemistry, or at least a reasonable theory that can be easily tested with a simple reptile bulb selectively placed:

https://www.youtube.com/watch?v=lfiI78uN3Ks

 

[Bilbo]

Good morning Tina, Bilbo, all,

Granted that a single or a few uvb leds confined to the height limitations of the entire lamp may or may not be useful. But, It has been shown that UVB bulbs used within the height effectiveness of the wavelength of that bulb
is useful for trich growth. You can see this when you compare trichomes in the effected area vs non radiated areas.
Whether it boosts potency is harder to determine without a benchmark potency to compare. Modern testing now makes that possible.

This guy seems to have a handle on the chemistry, or at least a reasonable theory that can be easily tested with a simple reptile bulb selectively placed:

https://www.youtube.com/watch?v=lfiI78uN3Ks

Nope, not a single peer reviewed scientific study has proved anything other than 1 of 2 sativa plants tested produced extra trichomes and this was concluded to add nothing to strength, weight, taste or anything else.
It was the plants natural protection against UVB burn which may have given rise to the urban myth that UVB makes buds bigger. They still haven't found an efficient way for LED's to produce UVB efficiently either, never mind at the strength it would take to dose the whole plant from the distance one of our panels hangs.

It has however been proven that LED's with or without UVB produce denser and therefore heavier bud per gram than HPS so unless you are 110% positive that everything about the environment you have created for your ladies to grow in is dialled in perfectly and have then added CO2 to increase your presumably already record yields then adding UVB just might prove science wrong, at an outside chance, one in a million, etc. and increase your yield with a small amount of THC free trichs. Hardly seems worth the risk of burning the leaves and blinding anything that dares glance in the tent when the lights are on, presuming the damage isn't already done by the tiny amount of light leaking from your tent that contains UVB.

The scary thing about UVB is that it directly damages DNA which is why we worry so much about the ozone layer disappearing and skin cancer rates rising as most UVB is absorbed the ozone layer before it hits us.

No broadband ultraviolet a, b or c overexposure is good for us in the long term but the UVB is by far the worst juju and to be avoided at all costs!

 

[Son of Hobbes]

Thanks for the replies on the UVB fellas and ladies; I've gotten quite a few replies and a few PM's on it and, at least based on the information presented to me, I think I'll pass on it for now. I've heard a few different ideas/hypothesis on the timing of the use of UVB and the proximity of how close it needs to be to even be useful (which if it even is indeed useful (which I think you touched on the proximity, Bilbo,) and I'm thinking that just may not be convenient for my setup. If the information changes or someone makes a convincing case I would definitely give it another look, but for now it's getting put on the back burner!

Appreciate all the replies!

I was asked about the volume/decibels of the Mars 1600W unit; I'm going to see if there's an app for my phone or maybe something on my computer that could give me kind of a rough idea. Honestly I think my computer is louder than the unit lol... there's some hefty fans in this PC though; so that may not be a fair comparison. I'll try to get some readouts here soon.

Should have a picture update coming soon!

 

[Feenix]

Nope, not a single peer reviewed scientific study has proved anything other than 1 of 2 sativa plants tested produced extra trichomes and this was concluded to add nothing to strength, weight, taste or anything else.
It was the plants natural protection against UVB burn which may have given rise to the urban myth that UVB makes buds bigger. They still haven't found an efficient way for LED's to produce UVB efficiently either, never mind at the strength it would take to dose the whole plant from the distance one of our panels hangs.

It has however been proven that LED's with or without UVB produce denser and therefore heavier bud per gram than HPS so unless you are 110% positive that everything about the environment you have created for your ladies to grow in is dialled in perfectly and have then added CO2 to increase your presumably already record yields then adding UVB just might prove science wrong, at an outside chance, one in a million, etc. and increase your yield with a small amount of THC free trichs. Hardly seems worth the risk of burning the leaves and blinding anything that dares glance in the tent when the lights are on, presuming the damage isn't already done by the tiny amount of light leaking from your tent that contains UVB.

The scary thing about UVB is that it directly damages DNA which is why we worry so much about the ozone layer disappearing and skin cancer rates rising as most UVB is absorbed the ozone layer before it hits us.

No broadband ultraviolet a, b or c overexposure is good for us in the long term but the UVB is by far the worst juju and to be avoided at all costs!

With no science background, I have had to rely on what I glean from reading and actual hands on doing. I have witnessed larger trichs to the point of mutants. But I have no way of knowing if it effected the potency.

What to do, trust an old hippy video with a science lab backdrop? Or a guy who I know grows killer buds and has a rock solid track record with me? Bilbo, I take what you tell me as golden and will retire my UVB after this run.
Since I have 2 Auto Blueberry just out of the ground I will pick one of the nicest branches and station the bulb solely on that for 6 hours daily from flower until finish. Since the THC is not circulated, if it has an impact on potency it should be obvious not only from plant to plant, but bud to bud. The vegetation is under CFL's and flower will be under a Mars/Hydro 144x3w reflector if it arrives in time. That I will order next week.

Since I switched to growing autos, indoors, I have pored over tons of stuff on every available subject but have yet to weed through most to see which is FOS and which is real. I've been a fan of uvb based on visual results rather than its known effect and I'll flip flop in a second when presented with evidence . I consider evidence or even just opinion from you word until controlled testing pins it down.

 

[Bilbo]

Bro, I'm really happy to hear it! :Sharing One:

As you know I'm all for trying anything that works with a sound scientific basis but I get really panicked when people put their own health at risk for the sake of a little bit of smokes so I'm really sorry if I come across a bit strong!

It's really only UVB and CO2 that worry me, magnets and other such stuff are harmless and won't hurt plant OR human but blindness/dna damage/cancer from UVB and an accidental death from CO2 misuse make the hairs on the back of neck stand up when I read peoples plans!

 

[Son of Hobbes]

Picture update coming soon; I appear to be a bit stunted so far on growth for the Sour Bubblin' Crack. I thought I had this beast far enough away from the seedlings, I'm only running the Veg spec right now. So I raised the light up and already in the past 24 hours I'm noticing a little stretch on them. I think I may have had it a bit too close; learning curve on this beast. I'll grab the tape measure and get an exact height and maybe I can get some tips on it. I'm suspecting height issues because the plants on the outside ring of the tent seem to be the most lush/vegetative at this point.

In addition to everything, I've got 7 Headband reg photo seedlings going, 4 Madness x Frost Dragon (not fully auto yet,) a single Magic Dragon x Purple Gem reg, and four more Cheesus Dragon in a multipot!

My large humidifier wasn't doing squat. Found the humidity after 24 hours of use actually at 16%! Woaaaaah! I have harder water at this property, and I'm thinking I may have a buildup inside of it somewhere (it hasn't been cleaned in awhile.) It's a fairly large unit (I'll grab a picture of it later,) it SHOULD do the job no problem. In the meantime, I stuck a teardrop humidifier in there and it's already almost up to 40%; I've got another small unit that I can use and that should get me up to optimum.

I think that humidity along with raising the light is going to get things back into the swing!

 

[Son of Hobbes]

Checked my humidity early this morning in the tent and I'm up to almost 60% It's steamy in there! What a difference! It just FEELS healthier in there versus that 16%. Already noticing the plants perking up a bit; amazing how much environment can play into what seems like such a small thing (but turns out to be part of a greater thing!)

Watered last night; giving 5 ml Cal/Mag per gallon, about 4.5 ml Silica Blast/gallon, and comes out to about 1.5 ml SuperThrive per gallon. Not quite into my first feed yet; especially with the Sour Bubblin if she got a bit stunty. I'm not worried about the growth right now; I've had stunted plants come back and give me several ounces in the past, so... optimism baby!

I'll grab some pictures here in a bit; gotta get that morning coffee on!

"uuuuggghhhh.."

 

[Marshydro]

Oh SoH, you shocked me out when I saw the humanity is only 16%, really a relief it is increased to 60% now. Good job there.

 

[F.N.]

SOH can we get a update bro?