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I've used that pen in the past, it's been around for awhile. Yes, there are cheaper meters out there, but in my experience, Oakton can be trusted. Also Hanna, Milwaukee, of course BlueLab.....even the cheap-ish HM Digital seem to have a pretty useful life. Criminal

I won't read the 600 pages of this thread, but I love the ROOT PORN! :clap:

Hydroton top inch of pot. Just a thought, Criminal

Holy sh1t. Running about 1800PPFD in there. Ever ran that 1k in a little larger space, like just another couple of square feet? Thinking you could squeeze a little more out of it if you did....but at this point who cares, right? Good for you, man!

Gotcha! bongsmilie

You could potentially yield the same with a 600 in 8sf as 16sf. Space will be a limiting factor in 8sf with 1k.

Are you f@cking with him? Ebb and flow? You're f@cking with him, right? Clean room SF.

50 day flower? 65 g/sf? Interesting. I like the breeder. Maybe I'll check it out. Thanks

Unfortunately, that's not how it works. LIght disperses as it leave the tube/reflector, so each plant will (in theoretical perfection) get 1/4 of the PAR being put out. In a 4x4 with a 600, your limiiting factor is the light. With 220 PAR watts in a 16 square foot space you are looking at a...

McCree Curve. I think you misunderstood. I didn't say targeted spectrum was the best way to grow. I am saying that using specific LEDs in a DIY array can more accurately reproduce this. Blurple LEDs are not the answer. And you get better results from T5 vs COB? Really? And by the way, rather...

PAR is just a measurement of radiation that the plant can use. Lumens are for humans, PAR is for plants. CFL and T5 fluorescents will grow weed, no doubt about it. Use enough of them and you can grow a lot of weed. Initial cost is relatively low and they allow you to get a feel for what the...

I have to disagree with a couple of earlier posters - CFL isn't necessarily the least efficient light for growing (incandescent excluded). CFL's put out 50-70 lumens per watt, the vipar spectra linked above gives you around 33 lumens per watt (about 5% efficient) or 4589 total lumens and 50% of...

I don't know that light personally, but just took a look on amazon. Looks like 206 Watts at the plug and under 25 lumens per watt, for just over 5000 lumens. And nearly 50% of those lumens are in the Blue (veg) spectrum. Not efficient at all. For comparison, CFL's give off 50-70 lumens per watt...

You are a RockStar!

My sig

The glass will block about 10% of your light. The biggest reduction will be in uv. Ordinary glass absorbs 97 per cent of the UVB rays, and 37 per cent of the UVA. Our beloved plants will grow extremely well with this reduction and while I agree that bare bulb is best, it is usually impractical...

I agree that a cool tube will be a little more efficient. The cost difference on amazon is ~$13us. It really depends on your ambient temps as to what will work for you. What is the average temp in your basement? It may be common sense, but expect the 600 to raise the temps in your tent ~50%...

I've not tried Holy Grail Kush, but Bubba Kush will sure get the job done. Heavy, almost sedative effects for me. Granddaddy Purple is another one to try. Definite couch-lock strain. I've heard good things about Kosher Kush, from DNA like Holy Grail, but I've never had the pleasure. It was a...

Everyone knows he's trolling you, right? Smoke 'em if you got 'em, Criminal

The only thing that really matters is that you are happy with your results. I love your passion. Keep it green, Criminal