I fed last week with epson salt for Cal / Mag and have read you dont need cal/mag additives when using heavy 16 nutrient line.
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I am using promix BX with heavy 16 nutrient line, I feed once a week.
My lower fan leaves look necrotic and I think it is a phosphorous deficiency and opinions are appreciated thank you.
" I do not believe i am over feeding them, i am following the heavy 16 heavy feeding schedule. I feed once a week with pure water in between feedings. "
*sigh*...
NEVER use full strength nutes.. let alone every week, let alone what size pot do you have that you have to water in between these weekly gorgings?
The plant looks moisture stressed, it looks like it is being fed too much, and you say you are feeding it once a week full strength and watering 'in between'..
My best guess is moisture stress, and you will continue to kill it if you introduce cal/mag hi brix into the fold BEFORE you get this issue fixed and let her recover a bit.
She needs LESS not more.. she needs you to get her environment stable and for you to leave her alone and be a plant.. there is no magic potion there is no quick remedy.. the best thing to do is lay back on EVERYTHING you have been doing and leave her alone a few days.. you are stressing the stress..
If I had to guess.. and I could be wrong.. God I have been wrong before.. (mostly about people, not plants.. *L*)
Thank you for all the responses, I flushed the beginning of last week until my run off ppms were below 300 then fed them with ppm of 1200 with the addition of epson salt which i now have Cal/Mag on hand and will not be using epson salts anymore. I do not believe i am over feeding them, i am following the heavy 16 heavy feeding schedule. I feed once a week with pure water in between feedings. The plants are 2 weeks into flower they have been in 5 Gal. buckets for a month now. The nutrients are PH balanced and i have never adjusted PH, my tap water is PH neutral 7 and heavy 16 brings it down just a notch to were it should be. I am confused, I am introducing Orca, Cal/Mag, and Hi-Brix this week.