The one @Imcamping86 posted would be what your looking for.
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Okay I’m just in a 4x4 tent so this model seems right for me I think. It says to run it at about 18inch over canopy for an hour a day. All this seem right?
Yes but you have to pay attention to your plants and bleaching, those tubes are strong and you might have to pull it further away, especially if your running more than one.
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I don’t know much about uv lights, just trying to contribute.
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I’d love to add some uv but I’d have to do 4 small ones in the corners as my space is covered completely in strips
As you can see I can’t go from the top without blocking the main lights and if the uv has to be father away the strips would block the uv lol
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sexy plants, but yea the sides would work
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https://chilledgrowlights.com/education/why-you-should-include-uv-a-in-led-grow-lights
Maybe 2 uvb and 2 blacklight?
Many UVB bulbs have a over saturation of UVA anyway. So two blacklights wouldn’t do much.
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UVC is Bad, mutates genes.
From what I’ve heard.
Yeah, can cause cancer and burn your retinas instantly too
And welcome back!
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I’d like to know what paper Dr. Bugbee is talking about at the 4:20 min marker in this video.
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So far, (When I Grew.)I was doing 20mins every other day (And it would comes on 6 hr after the lights start.).
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sorry to dredge up an old thread, but i’ve been doing a lot of research on uva/b and figured out (aka read it) that the emissions are a range, not a number, so the uva lights everyone says are worthless that others claim worked for them actually put out some uvb, so they are useful, probably moreso than straight uvb, since you can run them alongside your regular lights and not overload them with uvb and do damage. the epiphany came when reading this. notice the chart that shows the range. i wonder why nobody mentions that? am i just overmedicated?
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many recommend using UV the last 4 weeks in flower - FYI
Ive used uvb and uva before. I was using agromax uva plus I ran the same light cycle as my led and the uvb (agromax pure uv)turned on for five min a day. keep it far away it will cook your plant in that five min if to close. I quit using the uvb it does help but you have to be very careful with uvb. The uva tho you can right beside your normal lights same light cycle and it 100% works. Agromax has a good selection of uv bulbs there 10k finisher are nice to
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I’ve been using these for a few years after doing a lot of similar reading about UV-A vs UV-B.
https://www.solacure.com/superb.html
The Solacure Flower Power was too large and powerful for my tent, and the Agromax Pure UV are even more deadly to plants in a small space. So I went with the Solacure Super B, which is their newest model, for smaller grows or continuous use instead of rapid cycling which burns out fluorescent tubes really quick. It’s got a 35/65 ratio of UV-B to UV-A which makes them gentler low down on the canopy. The spectrum is shifted slightly higher than the Flower Power but still gets well below 300nm to activate the UVR8 pathway we’re looking to stimulate.
I run them around 18-24" above, two 4’ tubes in a 4x4 running at 64 watts of UV total, starting at two fifteen minutes exposures in late veg/transition, spaced out by two hours in the middle of the light period. So if I’m running 9a-9p, that’s noon-12:15 and 2-2:15. After a week or two, say a week into 12/12, that gets an extra fifteen on each exposure so say noon-12:30 and 2-2:30. Then noon-12:45 and 2-2:45 by the end of week three, and up to a full two hours as two one hour exposures noon-1p and 2-3p by week four or five. It stays there until the end of week eight, then I start tapering it back down gently, about the same time I turn my lights down a little, water a bit less, and start thinking about switching to 11/13 photoperiod to finish up around week ten. That system has worked great for me and produced some very frosty plants, with significant trichome formation on fan leaves and stems besides icy buds that are heavy on resin and light on plant matter. I don’t ever want to grow without UV TBH.
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I’ve got the brand new HLG Blackbird with the UVA 30 bar that bolts on the underside of the Blackbird. I will set it all up someday. Space issue at the moment. I can only do outdoor. @Gizmo is using the same setup. 
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Word, I went with the tubes because of the long rep Solacure has in both growing and also UV curing for luthiers and other woodworkers, and the guy’s background before this company in tanning tubes. IDK if it’s all the time but they do a deal for a box of four Super B with free shipping that is the best price I found on UV stuff. I didn’t buy their fixtures, which do look quite nice and decently priced, I got two really cheap ($15/each?) Lithonia shop light fixtures from Lowe’s and put one Super B and one normal warm white tube in each. I want to get a few more tubes to swap with for the end of flower, like the 10K finisher that @Mr.greenbee was talking about, so that I can shift the overall spectrum PAR a little in a simple way.
Edit: @ColeLennon I should say, I use nothing but HLG lights, both prebuilt and their boards for DIYs. I just don’t have the ones that are made for the supplement bar and I already bought the fluoros way back now. I am curious to hear about people’s experiences with the HLG UV bar though!
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@sfzombie13 check out this nice rounded spectrum line between 285-400nm with the spikes at 310-315nm and 365nm.
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