Is this nute burn? The tips are super dark brown almost black and seem to be burning up the leaves from the edges going inwards. I have some plants growing in 2 different soils (fox farm ocean forest & sohum) with the same problem. My sohum plants got some nute burn on them but some of the fox farm plants are also showing this. Just started over the span of a week, currently in the first week of flower. I alternate watering with ro water and dechlorinated tap water ph’d from 6.2 to 6.6. I’ve been trying to not give nutes to sohum due to them already having nute burn. I did give the fox farm some general hydroponics 3 step nutrients. Anything helps! Thanks in advance.
Burning leaf tips
- Thread starter frizzbie
- Start date
Nickcg123
Well-Known Member
More then likely potassium deficiency caused by your pH being to high, watering with RO water(if you are) could also be the culprit. Potassium is best absorbed by the roots when pH is 6.3 to 6.5 so make sure your pH is correct and calibrate your tester if your not cleaning it properly or it's been a while since last calibration.
Hydro4life
Well-Known Member
Correct. Those leaves look very dark and may have a little nute burn too?
Flush, drop your nute strength a bit and get ph in check.
Doesn’t look like light burn to me.....
Nickcg123
Well-Known Member
Uh oh, conflicting advice
Hydro4life
Well-Known Member
He doesn’t have to flush but that’s what I would do to ensure I know exactly what’s in my mediumUh oh, conflicting advice
Nickcg123
Well-Known Member
Fair enough!He doesn’t have to flush but that’s what I would do to ensure I know exactly what’s in my medium
Thank you. I have more than one plant doing this so I might try bothHe doesn’t have to flush but that’s what I would do to ensure I know exactly what’s in my medium
Nickcg123
Well-Known Member
Good plan!
Hydro4life
Well-Known Member
If you don’t flush, just ensure you get a bit of run off 
Nickcg123
Well-Known Member
DefinitelyIf you don’t flush, just ensure you get a bit of run off