calcium lockout

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    Yellowing Leaves Help Please!

    So I have a Liberty Haze in Flower week 7 now thats leaves are turning yellow and rust just wondering whats going on with her not sure if its normal or what? I also have a Pineapple Express whose leaves are turning yellow/rust from the inside out. Wondering what i need to do to fix the problem...
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    first time pvc pipe setup

    Hello everyone, I'm a new but we'll educated grower experimenting with hydroponics for personal medication, I also truly enjoy the hobby aspects of growing, although it is proving to be a lot of work and trouble... I previously tried with soil but. Dirt.. is dirty. And building my new hydro...