Welcome to UK420

Register now to gain access to all of our features. Once registered and logged in, you will be able to contribute to this site by submitting your own content or replying to existing content. You'll be able to customize your profile, receive reputation points as a reward for submitting content, while also communicating with other members via your own private inbox, plus much more!

This message will be removed once you have signed in.

Search the Community: Showing results for tags 'uv'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Welcome to UK420
    • New Members
    • Announcements
  • Cultivation
    • Strain Base
    • Breeders Help Desks
    • Compost and Pots
    • Hydroponics
    • Outdoor Growing
    • Propagation, Cloning and Mother Plants
    • Auto Flowering
    • Growroom Design
    • Problem Solver
    • Harvesting and Processing
    • Grow Diaries
    • Cream Of The Crop
  • Cannabis Culture
    • News, Views and Politics
    • Medicinal Cannabis
    • Smokers Lounge
    • Uk420 Competitions
  • Sponsor Support
    • One Tree Horticulture
    • Vapefiend - The Vaporizer Specialists


  • Community Calendar

Found 4 results

  1. We're giving you a chance to win 1 x 30W UVa (395nm), 1 x 30W Far Red (730nm) LED light, 3 packs of 5 x Dinafem Seeds (White Widow, Bubba Kush, Shark Attack), 1 x 130G OCD Cube of your choice and a pack of The Jungle rolling papers. The seeds were left over from a previous competition... thanks again to @tokenroll for generously donating them. To enter, all you have to do is drop a comment below....maybe share a joke or tell us what you would do with the prizes. Each member who comments will be entered into a random draw (please don't post more than you're allowed or we'll have to disqualify you). Competition ends Midnight Sunday 7th November and the winner will be announced Monday 8th November. You must have a minimum of 50 posts to qualify. Members get 1 go, subscribers get 2 goes, lifetime subs get 3. Good luck everyone
  2. Eyup, I got bored and did a thing to my light. I got another light and made them kiss. Seems there aren't any true uvb leds, so tis a 24W t5 arcadia 14% uvb light, which fits nicely with samsung / diyleduk strips. also gives 30% uva for good measure rough estimate it adds just shy of a natural level of uv in proportion to the rest of the fixture. Taste tests begin roundabout new year! Fitting was easy enough, clips included and whatnot, just bolt them on. I already had holes for mounting my driver, so I cut the oscillation button from a fan in half and used them as a spacer to give it 3/4" clearance for breathing room. The strap's a bit bowed because I had to invert one of the fasteners to clear the power cable, which I did in situ, but it will do until grows end.
  3. Uv LED strip

    From the album multiple strains plus cheese LST

    I lay this strip across the top of my pots for the first 3 weeks of bloom then i hang the 300w CFL and the LED strip just above the canopy and i swear besides reducing stretch the uv LED makes the trichome production go through the roof, the 300w CFL are best as supplementary lights and i found that they seem to encourage the colours of the buds to show properly. when i added the CFL and the LED strip to my tent my yield didn't change massively, they maybe gained about 10% but the huge difference was in the appearance and general quality of the resulting smoke.
  4. Hello peeps, Hope all is well, my latest dilemma - understanding UV. Im buying a 315cmh and prefer the look of the agro lamp but because its uv filtered glass Im wondering what other lighting I can add to it to boost resin and oil production ? My other option was to buy the 942 lamp cmh (because it doesn't have the uv filtered glass) and maybe add some red spectrum led. Im also wondering in general what types of lights have the best uv output for resin and oil production Which uv am I looking for uva, uvb, or uvc? could I add some UV strip lights if so which ones ? Thanks for looking Cheers stay green people