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Seems sunbed fluoros emit ~5% UVB +/- 3%, so picking the right one would be important. UVB is better at producing a tan apparently. On to brand name searching.....

No problem. I was interested to see the Osram Ultra-Vitalux was developed for sun tanning. Now wondering if maybe sunbed fluoros might be better than reptile fluoros. I doubt they'll emit more UVB per watt, but they come in wattages up to five times the reptile fluoro's and in 6ft lengths -...

Great find HOHO - that's the site I linked to earlier, but I didn't realize they had so much information on there, they have a whole bunch of distribution patterns for the bulbs with intensities and distances, REALLY useful Mercury vapors FLOODS = good for buds that are all near canopy or...

Damm, these Reptile EB Megaray bulbs are not fk'ing cheap! I've seen them priced around $120 -> 140 / £70. Even more of a concern is that the UVB output is only normal sunlight at 2ft after about six months. When you first turn it on it's about five times more intense. So you'll be cooking the...

For Hulk Nugs... here they are where they were supposed to be a month ago! The lamp is 1kw, the coir is actually rammed with perlite (below the surface) and the roots are infected with mycorrhizal fungi. There are hydroponic drippers in the pots that will be leaking Ionic Coir Grow / Bloom...

Pie = slang for pills? I used to be all mushrooms and tripping, then gradually started smoking and now like the pills. Pills have a horrific reputation, but a lot of the issues you hear about are due entirely to the user messing around or not smarting up before they take them - it's like when...

Perlite is the reason why people who never grow anything (not just cannabis) usually have shit plants - when they miss it out. I usually add enough that the soil will 'free flow' out of my hands rather than dropping as lumps, and I sift it between my fingers to get any lumps broken up. I don't...

ha ha ha Agree And I have to agree with the other guys that you need to be careful with that shit. Any commotion around your grow is going to lead to issues; the fact they even know about it is enough. For the providers of the illegal world, you need to stay quiet. At least close to home...

I like the idea of having heavier fabric on the Growlab. The Dark Room's walls are about the thickness of a tent's fly sheet (the outer water deflecting sheet). It works, but it would feel nicer if it was heavy canvas. Still not sure about the window, I don't think I'd want to pay for one...

I don't think so - but I had to think about it for a second. The output ratings I've been using people have actually measured with a probe up against the glass. So 50% of the light intensity will already have been going off in other directions. If you put a reflector behind it, I could guess...

I never expected to be able to hang my filter / fan off the side of it. They're sitting on the floor outside the tent. Why would you hang that off the side anyway? The roof is going to be stronger and resist toppling better. The tent works fine for what it's designed to do which is reflect...

:idea: 'Bearded Dragon' should become the new nickname for green, or a strain at least. :bigjoint: There's no real information on how close they can get yet. The only way we're working it out is by choosing lamps and distances that mean the plants are getting just about the same amount of UVB...

The air temperature in my tent is around thirty with the light down low - the radiator is off in the room but it's a small room and the door has to stay closed to keep the cats out - they'll either rip the tent to shreds, sick up on it or mess it up somehow. I've decided to have my fan...

I've got a Secret Jardon 1.2m x 2m - I think it had DR Street on the box, can't remember DR though. I was really skeptical about buying a tent and figured I could just DIY something - but the quality impressed me enough I'm happy I bought it. The fabric is decent, the mirroring good. I...

Good thinking. Although, one to word carefully. "Yeah, I need the sickest huge bulb you've got for growing... er.... something..." Curing paint would be good since it's not connected and can't harm anything. When they tell you it's not designed for that just say it's knowledge passed down...

There's almost certainly someway to pick them up - an online retailer that doesn't bother with phone calls. Even if you are calling just say you're aware of the UV issue and come up with some ingenious reason for why you need it (Epoxy based glues and paints can be UV cured) UV curing lamps...

Sorry HOHO, that sounded harsher than it should have done - I was just trying to think up the best possible way the light could be distributed. It obviously depends a lot on your plants and setup and I would agree that having plants like yours, a 45 degree bulb on a mover would create excellent...

7:30 am interlink arrives with my 1000w bulb. I did ask for a sunmaster HPS, and was grateful the place posted it next day, but they've sent me a MH (and a coolspectrum :/ ). I thought for a few minutes about whether I'd send it back for the HPS, but time is getting on and it's taking the piss...

Topfuel is the information in this thread; What he's saying is that a 20w 10.0 UVB bulb will emit about 16x more UVB than the sun. The only difference is, the UVB emitted from the sun is measured at human height (hundreds of millions of miles from the sun) - whereas the UVB emitted from the...

Right - I've been ultra busy finding a replacement and have one in the post right now - finally. They'll be under it the hour it gets here. I'll get some more pictures up once the bulb turns up (hopefully tomorrow). I figure I should probably give them another week under 24h cycle with the...