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Does CO2 supplementation kill microorganisms? And at what ppms

If so at what level(PPM)? How do I know if my roots are getting enough oxygen as well?

We all know HIDs work but their power bill is enormous. This is why LEDS appeal to me as well as the customized rays. If you've studied biology you know photons are actually what are harnessed from the light (in our case LEDS) to create electrons within the chlorophylls of the plant. These...

Want to build my own LEDs. Any recommended text to understand the fundamentals of LEDs? I'm currently in the process of getting a EE bachelors but yet to take higher up EE classes. I am down to read thick and dense text that will help me understand all fundamentals LEDs. Thanks in advance...

Came expecting 5 pages of discussion. Drop your egos at the doors fools. jesus

Sorry to say, but your waxing days are coming to an end.

Im considering getting a water chiller to allow the hoods to touch the girls but am unable to find a direct answer concerning if too many lumens is an issue. Many things I seem to read contradict one another when researching this manner. So what is it? Heat is a obvious stressor but can there...

I finally took the move to only read the experts ideas by utilizing the search function. Through this I found that homeboy Uncle Ben double harvests-meaning he first harvests the top colas and THEN places the plant under the light to allow light to be captured to the lower buds. Does anyone...

Had an intercept in L.A about a month ago through coffee mug secretion. Hows ordering for yall? You guys getting your beans?

Last semester I wasted a lot of time searching for knowledge in threads. As you are are all aware most people post ego-filled and knowledge based off their poor experience. Because of this I am searching for sources of both horticulture and botany, preferably, for marijuana. I have read the...

any input from the cash croppers. How much yall think a tinth will run for at a marijuana store? Do you think weed is finally about to grow like weeds again?

One thing that boggles my mind is the reasoning of 6 plants and 1 ounce. We all know a pound a plant is realistic if done rightly. A trap? :confused:

Will definitely be interesting to see the 10th amendment play into roll as its been discounted with MM many times over. Do you have any predictions of federal involvement?

Amendment 64 passed today in Colorado. The amendment allows marijuana to be regulated like alcohol. Colorodans will be allowed to hold an ounce aswell as the legality to grow 6 plants. This is a huge deal arising many further questions for discussion: 1. When will the Amendment take into...

plant training is not that complicated. do both do fit the circumstance.

two trunks

I began the lady by topping the plant for 4 main shoots; 2 of these main shoots became worthless due to poor topping or whatever went wrong. Two of the shoots growth are permenately stunted so today as I watched my plants I cutted one of the main shoots fan leafs and a little bit of its stem. I...

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