Any ideas on what is going on here?

Lol, exactly. Why though?, 1.2 ec to much? More cal mag, led 2.5 ft off canopy maxed out touching ceiling

k0rn4444 said:

Lol, exactly. Why though?, 1.2 ec to much? More cal mag, led 2.5 ft off canopy maxed out touching ceiling

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I was looking at some other posts on advanced nutes (I've never used them). That stuff packs a punch and a lot of folks are using it at 1/2 strenght and some even lower.

I go from 315 lec in veg, ec same around 1.2 , then to the gavita 1650 led in flower, seems to be the same story everytime. Tried raising temp and humidity, because that is what is recommended with led, but still same problem

Yeah, definitely see some similarities, I could certainly cut it back, but these are large plants and they take the 1.2 ec in veg it seems no problem.

Yeah, I am currently at 50% recommend

I'm all out of ideas. hahaha

Edit: I also deleted my lockout pic post because of GPS coordinates.

is your ec meter and pH penbeen calibrated recently ?
something doesnt add up here

So I would say this moving forward (too late for this grow). Next grow start super low with the nutes. Even to the point of showing begining defficiencies so you have a good idea were that threshold is. Then just bump it up slightly from there and keep it there until if/when the plants show a need for more. That way you always have a starting point that if anything shows up its 99% deficientcy and not toxicity. Soooo much easier to diagnose that way. For hydro anyway.

are you topping up with water to maintain ec ?

Ph has been calibrated and I have two different e.c. meters I use both read the same

Drain and refill every Sunday, 25 gallon rez one plant dwc.

No top up

have you measured ec daily between refills to see how much its raising ?

No I never have, I run single 5 gallon bucket dwc with advanced nutes for veg also, dump bucket and mix fresh once a week. It's ph perfect so I just leave it until Sunday. It seems to be something with these led lights I think, it's been an ongoing problem for the past like 18 months, can't figure it out. Shortly after I move them to flower room under leds they go down hill fast.

I could easily Topoff, I have a fill float on each cart now, maybe I should try that.

I could easily Topoff, I have a fill float on each cart now, maybe I should try that.

yeah you might find that your ec is rising too high between refills and smokin your plants.

Good idea, Going to try that, easy experiment seeing I already have the 1/8 inch lines running to each resivoir.