Nutriant issue?
- Thread starter Edward84
- Start date
Cpappa27
Well-Known Member
That looks like an advanced calcium and magnesium deficiency with a slight bit of nute burn. Curling up like that when theres no heat problems, not overwatering, your leaves turning that color and in the back lowers I see yellowing and dying, indicates to me its probably hungry for calmag. I would say possible light burn but I dont think it is because the leaves above the curling ones should look the same or worse since they are closer to the light.
Edward84
Active Member
Everything under looks good, but it still shows the same issue just not as bad. I added some calmag 20 ml for my 30 gallon resivor.
Tolerance Break
Well-Known Member
I think you're going to cause more problems just adding calmag.
What nutrients are you using? When was the last time you flushed the medium (presuming it's not DWC)?
What nutrients are you using? When was the last time you flushed the medium (presuming it's not DWC)?
Edward84
Active Member
Sorry for the last Reply. I am using Humboldt Secret full line. I changed my res 3 days ago, so it's pretty fresh. I am running a flood and drain bucket system with 3 gal pots.
my EC is now 1.1, down from 1.4.
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whats the ec and ph of your runoff?
Edward84
Active Member
I'm running flood and drain, The res is at 5.8 but I am starting to suspect my meeter might be giving me the wrong info. I found one of my old cheep PH pens and it is telling me my res is at 4.6, while the nicer one is telling me 5.8. By the way my plants are looking I'm thinking there is a problem with my newer one. running 4.6 would lock out a lot the stuff I'm giving her. Humbolt Nutriants never gave me problems in the past. I had it dry stored for six months and maybe that could have damaged it. My new one should be in tomorrow so I will be able to see which one to get rid of.
has to be the ph, look like N,Ca,Mg, and k lockout.
Calibrate both pens and check behind your newer pen until you get a newer one. I check my pen before each watering to make sure its in calibration. But I also have a 2nd pen for back up if things start looking off. PH and EC is the 1st thing I look at when I see a problem.
What pens are you using?
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Edward84
Active Member
Ok, I ordered a new pen to double check the work of my PH20 meter by Apera. Both of them show the same after calibration so it's not a PH Issue. The res was recently flushed and new nutrients were added. I brought the ppm down to 600, or 1.2 EC. I think I might have an idea but it's a long shot. I think I have been misdiagnosing a light issue. I am sitting at 60,000 LUX which is pretty high. I thought it might be cute burn but I think it is too much light. I have been pulling way back on the nutrients to correct nuts burn when it might have been light stress and burning the whole time. it's an idea at best. It might be the problem, and it might now. what do you guys think? The problem is getting worse over the last few days after pulling back to 1.2 EC. I turned back my lights to 60% giving me 38,000-42,000 LUX. It's a 4x4 with a 680w light.