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    Flowering stage: lower new growth almost completely white!

    I'm about 4 weeks into flowering my Northern Lights in RDWC (connected 5 gallon buckets) Take a look at the pictures: the bud sites and leaves on the top half of the plant (the older, more grown out stuff) is all healthy and green. But all the new growth tips and bud sites that shot out during...
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    "I think I vegged too long..." - A first timers grow

    First time grower here! - 5 feminized Northern Lights from Nirvana - Grown in connected 5 gal buckets with another 5 gal bucket reservoir, actively recirculating via pump and top feed lines. - 1100 gph air pump (60w) with a line to a 5" airstone disk in each grow bucket. For the first 6...
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    Scientific methods for determining plant nutrient uptake in hydroponic systems?

    So we're all probably familiar with the many charts circulating the internet that shows how nutrient uptake is affected by pH range. We're also all equipped with EC/TDS meters to know the total concentration of nutes in the liquid. But my interest is in how one would determine the 'ideal'...
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    Grow tent, trade-off between temp and humidity?

    (Pictured: My tent with the 'alternative' setup, no circulation, vent cooling for light only, and higher RH) Winters in New England can be very dry. Today our apartment (and my grow tent) hit 10% RH! I have a 5'x5'x80" grow tent for a 6 x 5gal RDWC with a 5gal reservoir. 5 Nirvana Northern...
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