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    General Hydroponics Ph Down: How To Use This Product?

    If there's one thing that really grinds my gears with regard to nutrient products, it's vague or incomplete instructions. This product, General Hydroponics Ph Down, really takes the cake in that department. The "instructions" just say to add the product "sparingly" until the desired ph is...
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    How to accurately measure pH???

    I've been growing for many years but I am totally new to pH and tbh I don't understand it at all. To make matters worse, I cannot seem to accurately measure it no matter which method I use. For example, I recently purchased a pH test kit where you fill up a test tube half way with the water...
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    What causes this problem in cannabis plants??? (PICS)

    The plants are just 21 days into flower and many of the top leaves are already just lousy with this stuff. When I grow I have no problems whatsoever in the vegetative stage. The plants are lush, green, thriving no problems. But every single grow I have done in the last four years when I flip...
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    How much should I feed 'em?

    (If you're not familiar with my epic saga trying to keep my plants alive during flower you can read about it here: https://rollitup.org/t/is-this-tobacco-mosaic-virus-almost-three-straight-years-of-total-crop-failure-should-i-nuke-the-grow-op.1085897/ ) I'm going to do a complete flush and feed...
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    Is this Tobacco Mosaic Virus? Almost three straight YEARS of total crop failure. Should I nuke the grow-op?

    Hello, I think my plants have Tobacco Mosaic Virus, or some other really bad plant virus that is systemically crippiling my crop to the point of near uselessness. This is not a simple nute or ph problem or anything like that, I would know, I have 14yrs experence growing and I have NEVER seen...
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