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wow those pics are great erwin you've got me keen to start (well keener anyway)

The_Hemp_Godess: “You are wasting your time, energy, and money with this set-up. Haven't you absorbed anything that was told to you in this thread?” You needn’t concern yourself about my time, energy and money and you don’t know whether I spend days or minutes on what I...

BTW leafminer thanks for the compliment. Rusty maybe but the chemistry is coming back: its becoming fun even :)

My worried housemates have banned me from leaving lit candles in boxes filled with card, alfoil, electricity and water, which I would no doubt visit when seeking intoxication :( So I've chosen fermenting sugar as an alternative source of CO2: Fortunately I've done a lot of this (to make vodka...

Thankyou so much dirtyolsouth, you've provided just the kind of experience that I've been looking for. I've got time to go over all of the CO2 stuff again before veg grow begins, and I shall do it mindful of your comments Also, HempGoddess yes I've read plenty of studies - mostly for commercial...

Thanks folks for an intelligent, informed debate about LEDs, I've been reading it carefully and finding it useful. It makes such a great change from endless bickering about who does/doesn't like LED which threads like this can so often succumb to. Today I got my first UFO from China: 90w as 10...

BTW adding CO2 to the growbox removes a major reason for ventilation (the other main one being for temperature control). Less ventilation means less fumes - surely this sounds tempting to some discreet growers?!! Also, putting CO2 above 10,000 ppm (1%) or higher for several hours will eliminate...

Whilst awaiting replies from those growers who have experience with CO2 generators and any other DIY CO2 generation, there are some ripper articles online about the benefits of supplementing CO2 to the air in commercial greenhouses. The gist is that normal levels in air are around 300ppm (parts...

Thanks Haze_Me for sharing your experience with CO2. I can do the maths no problem and there's no end of literature describing general hydroponic growing techniques, but I've come to this forum looking for ideas that people have actually tried, so I can either learn from or avoid same. Having...

I love this idea thanks heaps for it. As I've built and run a reflux still for ages (hope I can say that here), I'll use some on the next batch of grow I get - should make a good potion :)

These calculations should settle whether or not the amount of CO2 from a candle is useful for growing. It uses no more than high school chemistry and maths: My grow cupboard is 0.5m x 0.45m x 1.5m = 0.337m^3 = 337 litre Formula for candle-wax (typical) is C25H52 Atomic Mass: Oxygen 16g...

Hey Crazy I posted much the same thread yesterday before I found yours, so if the topic still interests you you can pick it up again here http://www.marijuanapassion.com/forum/showthread.php?p=482045#post482045 BTW some comments suggested that there is little CO2 available from a candle. My high...

I can buy big bags of Tealight candles quite cheaply (the little squat ones in tin cases. They supposedly burn for 5 hours. Reading through this great site I've found nothing to help so let me ask: 1. Would a burning candle make an effective CO2 booster? The extra candle heat and humidity would...

I still have plans to construct my own growlight panels but its now a project on the backburner for a while. Based on what I've read to date I'd be looking at Luxeon 1w 660nm - around about 80 - 100 of them for the bud cycle, and then luxeon 6500k white, between 50 - 100 for both cycles. As far...

I still have plans to construct my own growlight panels but its now a project on the backburner for a while. Based on what I've read to date I'd be looking at Luxeon 1w 660nm - around about 80 - 100 of them for the bud cycle, and then luxeon 6500k white, between 50 - 100 for both cycles. As far...

I still have plans to construct my own growlight panels but its now a project on the backburner for a while. Based on what I've read to date I'd be looking at Luxeon 1w 660nm - around about 80 - 100 of them for the bud cycle, and then luxeon 6500k white, between 50 - 100 for both cycles. As far...

I looked at quite a few types mostly 1w, but also 3w and 5w ones with heatsinks already installed. Anyway upshot was that according to the spec and price sheets I cant purchase 90w worth of LED for less than the price of a 90w panel of similar spectrum. Furthermore I've learnt that to run a 90w...

I hope I'm wrong, but someone please correct me if that's the case but I'm beginning to smell a rat regarding LED power ratings in Commercially assembled panels. After many days of searching lists of suppliers and manufacturers I just cant get the numbers to add up. A typical price for a 90watt...

I agree KinKahuuna, the low thermal footprint cant be detected with IR cameras, power consumption low enough to avoid detection, all small enough to use in microgrow set-ups, and with care LEDs can provide the right bits of the spectrum. I can see that the (at the moment but bound to improve)...

THanks SpearChucker they look good. I've heard praise for 660nm red now, over 630nm. Do folk out there have experience with both? I'm tempted to use both as a hedge better, but perhaps one wavelength has proven to be better than the other?