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Many growers cut down co2 to atmospheric levels the last 2 or 3 weeks to help trichome maturation as co2 can/will inhibit ethylene production which will cease trichomes maturing. What ppm do people reduce co2 levels to and for how long before chop. Atmospheric is around 400ppm no (slightly...

Are leds comparable to hps and cmh nowadays? I know the main drawback is cost but when I was still plugged in it seemed most commercial grows were still using sodium bulbs and led commercial grows we're very niche. Can someone give me a breakdown of the major cons of led. It seems the biggest...

So currently am using shooting powder weeks 5-8 along with bud XL weeks 3-8 but am getting horrid foxtailing. Suffice to say I plan on switching to moab however with a 0-50-30 ratio its (to my. Understanding) undesirable to have higher levels of p during final phases and something like big bud...

The Philips bulb comes in a 942 (4000k) and a 930)(3000k) Using them in veg and obviously the 942 is better with more blue but when I was running the 930 they looked alot more robust and generally bigger. I know the increase in blue in the 942 will keep them squat and promote side branching but...

I know most people recommend using canna's pk 13/14 for only a week but I run a massive 800 litre modular flood and drain system and only flushing at the end of the cycle (10 week perpetual) So will using this product during the stage the first bud sites appear have adverse effects due to not...