gamereaper
Member
All i have to add to this long post is green and other light is there so you can see your plants... and make sure there the right colors
Grave mistakes can be made overlooking the involvement in genetics and UVb response mechanisms. Choose mountain strains for best results imho.Here's a few must reads and a must watch,
http://www.420magazine.com/forums/budding-cycle/71198-elaboration-phytochemical-process-makes-thc.html
http://www.420magazine.com/forums/cabinet-closet-grow-room-setup/79209-uvb-light-whats-real-story.html
https://www.greenpassion.org/index.php?/topic/26244-methods-for-increasing-potency/page__p__338927__fromsearch__1#entry338927
http://www.youtube.com/watch?v=lfiI78uN3Ks
explains why HPS sucks for THC production and why UVb is necessary.
this guy ultimately says to only use UVb lights for 5 hours during the "noon" time of the light cycle. I think I'm going to stick with 4 hours on and 20 hours off, overlapping the "noon" cycle with the T5's. That means I'm going to need some single bulb fixture. It really sounds like without UVb you're not doing your buds any justice.
Hawaii has 4 times more UVb than the mainland. This goes for all tropical zones including the non-mountainous ones. I don't think you need to have a "mountain strain" in order to make good use of UVb. I know what you are saying though. I am willing to bet that all cannabis strains benefit from having UVb added to the noon-time hours for short increments to simulate direct sunlight and to stimulate the production of THC and the highly valued and important and over looked terpenes. Yes, a plant on a mountain will be exposed to UVb in greater quantities (especially on a mountain in the tropics) but it also would have a higher intensity in all other wavelengths as well, not just UVb.Grave mistakes can be made overlooking the involvement in genetics and UVb response mechanisms. Choose mountain strains for best results imho.
mpp
canopy under T5 mixture with CFL 65w plant grow lighting on the side,
here is the color analysis with the added red sun in place of the plant grow T5 along with the additional side lighting with the 65w plant grow,
photo of the canopy with T5 lights off,
i cropped all the images together so it could be seen without having to scroll down a whole page, the side lighting is under the T5 mixture. it's just one plant that's had the bonsai treatment if that's what Youre wondering??????LOLare there missing pictures here?
I only say mountain strains because that is what I and others have tested. Many sativa doms that have been bred for the last 30 years under HPS have shown adverse reactions to UVb levels easily tolerated by Kush/afghanica strains. My personal opinion, take it or leave it. I know tropical strains/hybrids (don't forget those tropical strains can have mountain genes from decades/centuries-old seed trading---a great human tradition) that do great, and many academic studies have correlated UVb balanced sun emulation to increase terpenoid precursors which result in increased volatiles production (it just straight up smells better). I can easily smell out medicine grown with blue light vs not. And honestly where you find blue you often find the UVs, I know we hear UVa is useless but until rigorous study has been performed, let us just assume that the PAR/PUR graph doesn't just plummet after the magical 400nm threshold is crossed (chlorophyl absorption, in my eyes, continues at reasonable rates into the UVa range---rates that seem comparable in the CO2 tests to 500-600nm aka yellow/green "high penetration" <--this because of the leaf reflectivity phenomenon amply discussed in previous posts by yours truly. I also submit that as a photon of 400-500 nm wavelengths carry more energy/unit than their 500+ counterparts = ignoring morphology stuff just for a moment pls thnks. If the UVa is also high PUR light, then it should be even higher energy than the blues, possibly to a point that it would more quickly overwhelm the photosynthetic electron transport systems. Not trying to rant just to sound smart, I'm just trying to explain why I like that UV t5 so much. If all that 280-400 is useful to the plants, at a reasonable distance to avoid oversaturation, this could be a great development.Hawaii has 4 times more UVb than the mainland. This goes for all tropical zones including the non-mountainous ones. I don't think you need to have a "mountain strain" in order to make good use of UVb. I know what you are saying though. I am willing to bet that all cannabis strains benefit from having UVb added to the noon-time hours for short increments to simulate direct sunlight and to stimulate the production of THC and the highly valued and important and over looked terpenes. Yes, a plant on a mountain will be exposed to UVb in greater quantities (especially on a mountain in the tropics) but it also would have a higher intensity in all other wavelengths as well, not just UVb.
Prior to this change, the CW was abutted by 2 Red Suns, so even though they look red, they aren't providing the same red nms as the FS, which looks bright white. Odd, but true. This morning tons more trich production and bud swelling. Ima get me another FS today!I already posted photos with the flora sun switch. They are after all, made for plant growth. They WILL increase growth within 24 hours because they contain the deep red that plants use. The coral wave bulbs you are using ARE actinic bulbs meant for coral, hence the name coral wave. That little bit of infra-red in the coral waves is minimal and not going to create exhibited growth. The coral waves DO NOT have the red spectrum that plants need and that's why your plants started doing better when you switched them out for a flora sun bulb. If you are going to use the coral wave bulb, do not bother to put in any other actinics because coral waves are an actinic bulb, hope this makes sense. The Fiji Purple is like a Coral Wave and Blue Plus mixed together bulb making it a better option for your T5 fixture. Plus it has a little red in there. I am going with 4 Flora Sun, 1 Fiji Purple, and 3 Red Sun in my fixture. The Flora Sun already have the blue peaks along with the entire blue spectrum of the Fiji Purple so that's why I'm only keeping the 1 Fiji Purple in the fixture for now. It seems to be providing a sufficient amount of blue. Later, I will be switching out the Red Sun bulbs for 2 Coral Waves, and 2 UVb bulb maybe.
I think the benefit of Red Suns (or not) has to do with how much blue coverage you have. I went with 2 ATI Aqua Blue Specials + 2 Red Suns = pseudo Fiji + 2 CWs (later removed one CW), but probably did not have enough red (or too much blue), so adding the FS kicked up bud production, so will get another FS and replace one of the ATI ABS.i cropped all the images together so it could be seen without having to scroll down a whole page, the side lighting is under the T5 mixture. it's just one plant that's had the bonsai treatment if that's what Youre wondering??????LOL
I noticed some strange new growth and i'm not sure what to do about it. It was like the new growth was growing with holes or tears in the leaves. They've stopped reaching as much for the light fixture. I took out the red suns and put the ultra suns back in so now its back to 50/50 ultra/flora plus 1 fiji purple. It would be nice if someone would take a close up of their canopy with NATURAL LIGHT to compare. I keep going back and forth liking and then not liking the red sun bulb, I'm not noticing if it's helping or hurting, all I know is the growth perks up again after switching them back out for the ultras................hmmmmmmm, what to do what to do, so far I haven't been really seeing anyone on here say the red suns have been beneficial or if it's not red enough and then some people actually say the bulb is crap
What bulbs are you using for flower? Have you found any particular optimal bulb mixture?Well I just did a partial harvest of the T5 tent and the trics were cloudy and turning amber. Only 7 weeks at 12/12. It is super sticky and stinky! The HPS looks like it will go 8 weeks. Pics to come later!
Your plants always look really nice.^
It's a 175w Mh