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Hi guys. I need some advice on what the problem might be with the leaf pics I will attach. I am almost 100% sure it has something to do with potassium or phosphor, but I don't know if it's deficiency or excess of either ? These plants in particular are directly into the earth. I have used the...

I see so many grows in tents from 1.2x1.2m up to 2.4x1.2m with dehumidifiers inside the tent. I would just like to know how do you get the dehumidifier to work when your exhaust fan is extracting air faster then what the dehumidfier can dry. My extraction fan is 410m3/h on low which is more...