HELLO EVERYONE AT 420m forums! stumbled on this forum and was really impressed at the quality of information. Sadly, this is my 3rd grow and i've had some level of this deficiency in my last 2 grows. have this plant in 2/5ths promix, 2/5ths happy frog, 1/5 big & chunky perlite. I fertilize with the full earth juice line. With that being said, I'm thinking that this is either iron or sulfur. I bought and sprayed some maxicrop + iron and it really didn't seam to help. anyone have any suggestions?