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TL :: DR -gpw is not accurate -gpw does not allow direct comparison of growths - g per kWatt hour is more accurate and allows direct comparisons of growth - g per kWatt hour is a correct estimation of the amount of electricity (hence cost in bills) going in each growth Fellow growers, you...

While I find the Lucas formula good for sativa-dominant plants (ie fast growers and heavy feeders), when using it with light feeders plants (either whole breeds or particular individuals of a breed) it walways ends up in nitrogen deficiency. This becomes particularly evident when using high...

i was reading many articles and forum posts (now quite old) about the supposed benefits of the humic/fulvic acid supplements for the flowerign stage, sold by many nutrient suppliers at medium price. for those who don't know exactly what they are, humic acid(s), and their water-soluble form...

one of the beautiful things of indoor growing is that you can push your plants to the limits of yield, though experience and experimentations. but, where is the actual limit? in indoor growing (especially hydroponics) there is a limit of nutrients you can apply to your plant. depending on...

Hey Rollitup community, As many here I'm thinking of giving a try to DIY-build COB LEDs. So i started reading datacheets, comparison charts and even dummy electrical engineering books (as my knowledge of current electricity and circuits is not that good since highschool times hehe). So i set...