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I am a true believer in what you term the "swarm". Here is my version. Surrounding the entire crop from top to bottom with light makes for highly productive plants! My last 2 plants from this setup came in at 12-1/4 zips.

I agree HTG's numbers are too rosy. I think the 2' t5ho bulbs produce between 1700-2000 lumens when they're brand new so I was wrong as well. The fact that LEDs last for so much longer is also a good thing to consider. Those t5's need to be replaced regularly to maintain the light while LEDs...

That T-5 light will get you started and there isn't a thing wrong with T-5 but its still only 48 watts of light and about 1000 lumens for $70. The LED floods that Bumping Spheda found at Amazon $20 produce 1100 lumens each. With them you could more than triple your light using only 10.5 more...

I don't know Hyroot and don't need to hear what you think of him but the science is solid. I don't have any links saved to it but I am happy with my results and I have proven to myself that it works. 13.5 hours in flower with no hermies. Just more and bigger flowers. It's simple. Far red...

Well... Hyroot said it pretty well. The far red signals the plant to enter the sleep cycle. It naturally occurs when the sun is low on the horizon when the light is filtered most by the atmosphere. It just won't happen indoors unless we provide it sort of like all the other conditions we...

A few years ago I bought a UFO Flower Accelerator which is a 90 watt UFO with all 730nm LEDs. I have it on a timer set to come on 15 minutes before and 15 minutes after the main lights turn off. The extra 1.5 hours daily really improves yield. In 8 weeks of flowering an extra 1.5 hours a day...

At 13 watts per bulb you won't have enough light to finish even one plant well with 2 bulbs. ~100w of LED per plant is a good rule of thumb for starters. Those bulbs might be good for side lighting but as a top light they don't have enough intensity to get the photons past an inch or two of...

You'll get more out of those Luxeons if you move them a little further away from the big reflector cup. The reflector cup will block some of the wider angle light of the Luxeons. I'm a big fan of the Luxeon ES diodes and stevesleds as well.

I have 45 degree angle lenses on my top light. I use a light rail to keep the overhead light moving and because of that I keep the light about an inch away from the highest point of the canopy. If the light doesn't stay in motion it will bleach/stunt the tops when that close but moving it gets...

Oh yeah! It's pretty hard to give them too much light in flower. Only good can come of this! Your canopy looks super nice. I think its a nice result of the real stripping you gave them early on.

If you blow enough air on it you can use something like a baking pan. I don't know the exact temperature at which LEDs would overheat as measured at the heat sink but most LEDs develop problems such as lower output and early death at temps above 85c and most are rated at 25c. My rule of thumb...

You definitely need a heat sink to keep those LEDs cool. Those pcbs are not a heat sink no matter how they are advertised. Those heat sinks are pretty small. Not much surface area. Check this one http://www.heatsinkusa.com/7-280/ It is the right width and cut to 9" length would cost a...

I can't tell you why your meter reads a higher TDS on hot water than on cold. Maybe, as with PH meters, temperature of the solution affects the meter reading. Or...maybe it's the chlorine and fluoride evaporating overnight.

I run a sterile res in my hydro but I don't use H2O2 to keep it bacteria free because it doesn't work well enough as a sterilizer. Be judicious with the H2O2 if you depend on bennies because at high concentrations it will kill bacteria. A weak concentration won't kill bacteria. In fact, it...

I don't think hot water is as good as cold water for roots. Cold water holds more dissolved oxygen than warm water does. In hydro ~68f is recommended because of the DO. Roots need oxygen and oxygenated water provides that. To take it further I also add ~1tsp/gal of 29% H2O2. If you water...

I agree with that. About 700 watts of quality LED is a rough equivalent to 1000 watts of quality HPS. That's one main of the reasons I use LED. HPS may produce a bit more lumens per watt but because of the absolute control over spectrum LEDs can offer much higher usable PAR light at...

Thanks Green in the Garden. I'm pretty pleased with the latest yield. In the past I ran 3 plants in this system but I found that it's just as productive with 2 plants. Easier to manage too. I plan to run my diy led chamber for as many hours as the leds will go to see if I can really get...

Last day before the cut. 12-1/4 zips of top quality medicine.

I hate to say I told you so...so I won't. Nice jungle you have there.

I just use a small piece of insulated wire shaped like 'U' to connect + to - on each diode, one at a time while the cluster is powered. When you jumper the dead one the rest of the string will light up. You can then just solder that 'U' shaped wire in place in the dead diode and you will have...