Light burn and water

Fordprefect42

Well-Known Member
I have 4 plants growing in an ebb and flow system, 2 reservoirs that 2 plants are sharing. My spectacularly unreliable Kasa timers stopped working when I got a power glitch and the plants didn’t have water for a full 24 hours. I came back to find all of them at various stages of droopiness.

I got the floods going and 3/4 bounced back ok with the fourth being damn near completely devastated.

So here’s the question. All but one plant started showing symptoms of moderate to severe light burn in the days after that incident. I’ve since raised the lights, but I’m wondering if cannabis tends to become significantly more light sensitive after periods of drought?

My lights didn’t change and suddenly they all seem able to handle much less. This is now the beginning of week 8 of flower. I think I can ride it out, but for my own education I’m wondering if this is the norm and if anyone else has experienced anything like it?
 

keep it real.

Well-Known Member
Law of minimum, growth is not determined by the abundance of elements but by the least available. Zero water and nutrition could for sure cause the light burn on the plant with nothing for it to repair.
 

GrodanLightfoot

Well-Known Member
Potassium is extremely dependent on moisture for uptake. One of many reasons all the "pros" have burnt tips and tacos. Preaching less water in flower, more calmag, and all that nonsense.


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Fordprefect42

Well-Known Member
Thanks to both of you. The thoughts
are appreciated. It’s one of those things where I’ve been doing it long enough to mostly know what I’m doing, but then I get a previously unseen curveball like this.

I probably lost several ounces here, but at least I didn’t lose everything, and I learned how to deal with this if it happens again.
 
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