Think i have a recurring micro deficiency

jensenbeach1

Well-Known Member
I have my plants in some sanctuary soil havent been feeding much but it seems like every other week i end up with a iron or zinc deficiency i dont understand epsom seems to correct it within 2 days sometimes 1. Not sure if its from r o water having no cal mag in either heres a pic of weird yellowing new growth it may seem subtle but i can def notice when it comes and goes always in the middle part of the new leaf the rest is green
 
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