Deficiency/toxicity problems

Experiencing problems with a deficiency or toxicity I’m guessing. Watering using general hydroponics series gro/micro/bloom at a 3:2:1 ratio respectively and also adding calmag at the same dose that we are using the gro. Around 40 gallons of nutrient water for 160 plants. Ph’d at 5.8 and using well water that we have had no issues and success with before. However we were not using this much calmag before. Running under LED spider farmer lights at 65% humidity and 78 degrees with lights on 24/7.

Started noticing discoloration from the inside of the new growth as a form of a lighter yellowish color but the veins of the leaves are still dark green. The leaves are also curling down at the ends. Checked the Coco/perlite ph and it read low at 5.1. Just added limestone to each plant at around 3/4 tablespoons a piece. Slowly raising the ph of the growing medium that way but I wanted to post a thread on here to see if any of y’all had any ideas on what might be going on.
Thanks for any help

My bet you are letting runoff soak back up into plants

What's the PPM/EC of your nutrient solution?

Locked up hard, That soil in pots does not look like coco more like a peat mix?

Ppm on 700 scale is 2500 and the EC reads 3.4. Tables are made with a slope so the runoff drains to the end of the table and off into the drain. The medium we are using is coco loco and perlite mix.

Whoa 3.4ec that's hot ain't it?

Bucsfan80 said:

Whoa 3.4ec that's hot ain't it?

Click to expand...

That's sizzling.....

Possibly part of the problem?

I’d run plain water through the medium to flush(ph to coco) then feed around 300 ppm starting the next day with the solution focusing on macros with a small amount of micros. Keep at the ppm until you notice healthy growth on the tops of plants, or you start to have yellowing at the bottom(deficiency). Slowing up feed from there. You are burning them really bad, less is more with plants.

Flushing with florakleen the past couple of water cycles. Gonna cut the nutrients way down and start feeding again in the morning. Hopefully will start to see healthier growth on the tops in a few days

I would let the plants decide when to start nutes again. It's gonna take a while for them to recover.

Just dealt with something similar. Definitely flush with Ph’d water, looks like 1 gals, I’d run 2-3 gals of plain ph’d water. They’re likely locked out so check run off ppm. Flush until you get to or near the ppm going in, 100-200ppm seems to be fine for a flush. Once flushed, feed with a light nutrient solution, 300-600 ppm. Let dry back and monitor new growth and vigor over the next day or two. Give very light feeds or plain water until they look healthy and stable then slowly bring feed back up.