Any ideas on what is going on here?

VaSmile

Well-Known Member
Find ya a nice chart that show the effects of both deficiency and excess for each nutrient identify the one that looks closes to your leaves and eliminate it from you next few feedings. The damaged leafs probably won't recover but you will see it stop to spread and get new healthy growth. Naturally your ecm/ppm will drop as a result. Just make sure you adjust your ph so that it is the same as you have been giving or ph shock can occur. Off memory I think I found the one from royal queen the easiest to read.
Flushing with plain ph water to reset your medium I also an option
 

k0rn4444

Active Member
Been adding 2ml per gallon of calmag. You think I should pump that up, with my e.c. already at 1.2ish ? Advanced nutrients A and B is 1/2 recommended amount on bottle right now.
 

Anothermeduser

Well-Known Member
I would guess to lower the feed rate will make the problem worse, I’d do the opposite myself, 12 should be good but look at the leaf, if your running high the tips burn first and your tips are intact mostly even with the leaf hammered, clearly deficient imo.
 

HydoDan

Well-Known Member
If your PH is good it wouln't hurt to slowly bump it up..
Keep an eye on new growth for improvement..
 

VaSmile

Well-Known Member
1.2 is the highest I hear folks running and I see the most damage at the tips. That's why I assumed over feeding. I normally spot cal deficiency by the copper/red spots some are visible in the pic so I figured it was most likely a cal/mag imbalance. I'm a soil guy and still mostly just running the system I was taught and fiddling with it a little here and there to learn. Also a variety is spice of life philosophy so I never nail down exact feed for a given strain. That's why I'm on threads like this to learn from the vets there's plenty here and I'm a self-proclaimed dumbass
 

pegboy

Well-Known Member
Whats your PH? and whats the temp and humidity in the space? I can't imagine with ec of 1.2 constant in hydro that a deficiency would be that bad unless the plant was unable to acces the available nutrients.

edit: on a side note I rarely push my ec above 1.0 (anyhting more typically gives me some burnt tips). However I do run old school ebb and flow in rockwool so I typically get some salt build up over the course of a grow.

2nd edit: Also. How are your roots looking?
 
Last edited:

pegboy

Well-Known Member
Could this be leaf septoria? Anyone ever have it?
I would say indoors that would be highly unlikely. And given all your perameters look good I'll have to go with overfeeding. But I'm a B class grower so take that with a grain of salt. haha
 

pegboy

Well-Known Member
The only time I've experienced such a drastic change from flip was because of lockout. I respectfully disagree with adding cal-mag. Most times thats a cheap fix for bigger problems. There's nutrients there. Your plants just seem unable to get at them.
 
Top