don't forget the cal-mag, since your water is RO
I would feed my plants about half of what you feed
demoreal Reviewed by demoreal on . Another possible Phosphorus deficiency? Hi all, hope you can help. I've read and read for a week till my head hurts and I think I have a good idea what the problem is, but not positive so thought I'd get your thoughts. My leaves start turning brown at around week 7 and continue to get worse till week 12 when some are totally brown and burnt looking. I thought it might be nute burn so lowered the nutes for a few weeks but that didn't help. I now feel it is a Phosphorous defiency so I've upped the nutes and added additional Cha Rating: 5