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I'm essentially struggling with the same issue. I've drastically lowered ppm to 300 and I think it's doing better (it's been 2 days). I couldn't tell you what was going on with my plant, I think Mg was being locked out due to excessive potassium. In any case. I'm not pro, but according to my...

P.S. Mel Frank is a douche, and nothing he writes should not be taken seriously. According to his literature, 1000ppm is fitting for seedlings where as anywhere else (including what we call the real world), seedlings should not be fertilized and 800ppm is more than enough for aggressive...

Okay okay, good news! I've lowered the concentration further to 300ppm. Plant is doing better now (took about 48 hours), perky leaves, green hue slowly coming back (or at least, yellowing not progressing). I'm wondering though. Given that the plant was exposed to an overzealous ppm and had...

Okay, PPM now at 660 (water is 190 so actual ppm is 470) and pH is at 5.6. Fingers crossed!

Okay, just did a quick search for optimal ppm, it would definatly seem that mine is way too high. I'm going to cut it down by half right now. I'll post progress!

Okay, nobody asked, but given that it took me over two hours to find the info, I'll post it here as well. Nutradip TDS II handheld pen has a conversion factor of .7. so 1.0 EC = 700ppm for the nutradip pen.

It doesn't show very well on the pictures, but if you look on the 3rd picture, the lower leaf (it's at the top right of the picture) has burnt spots on it. The more I read, the more I think it's excess phosphorous and potassium that are locking out Mg, Fe and Zn. I am tempted to lower the...

Gur! Really? I've been following Mel Frank's insider guide, so you think this is nutrient burn?

Hi! I have a plant in a home made ebb & flow system (nothing fancy, just two tupperwares stacked on top of each other and a pump/timer, with an expanded clay medium). The plant is a clone that was given to me about a week ago. It went through 2 days under an incandescent light while I put...