Small backstory. Grow has been perfect up until now. Switched to flower 9/4/24. Last week I ran into this issue i was told was interveinal chlorosis, nitrogen toxicity and iirc a calcium deficiency possibly caused by N tox. (Not questioning whatsoever just recapping) the plant with the orange in the leaves .
I was told to water until tds dropped but didn’t have a tds meter yet. So saturday i watered to run off with ph’d RODI water, got my tds meter monday -apera pc60-. Yesterday (9/24) I watered again with ph’d RODI water 6.3-6.5 until about 30% runoff. And got the measurements, not that they make any sense to me. Especially bc my meter measures in ppt apparently. The orange leaves… the yellow leaves, the brown spots, the red stems…etc. Anyway, hopefully I can upload these in the correct order.
Am I reading it correctly that my ph are all good now except the ‘middle hog’ being a little low? I don’t understand ppm at all really but from what I have gathered … ‘left hog’ would be at around .00000379 ppm? If thats correct, does that mean I’m about 1200.00 ppm below where it should be?
I’m guessing my ph was off from when I was just watering with distilled water and not ph’ing it before and got nute lock maybe? But then not sure how I got N tox.
My next step without asking would have been to fix the ph of the middle hog and then start 50% nutes with calmag for all.
5 gal fabricpots with risers and saucers
Happyfrog & perlite
FF trio nutes
Calmag
Ive also become aware recently that my lights aren’t quite enough if that helps for any of my issues. 2x vivosun vs4000
8x4 tent
75° 51% humidity currently 12 on/12 off
Sorry this is all jumbled, my brain is scrambled trying to find answers and panicking. If there is anything I missed you need let me know and I’ll get back to you asap.
That Apera meter should have the ability to change scale to 500 scale ppm. No idea what it’s reporting.
Plants should make it all the way through flower and not uncommon to see defs in flower. Once you get a handle on the salt content of your medium you’ll do fine. FYI don’t look to old growth for signs of improvement. Once damaged they don’t recover.
One thing that you have incorrect is ppt to ppm. The formula is
1 ppt=1000 ppm . 1 ppm=0.001 ppt.
So 3.79 ppt is 3790 ppm, or from what I’m reading on your post you have 3-4 times more nutes than you should have but that’s only of you have calibrated and know the setting on your meter.
I’m guessing this isn’t as bad as you think, but definitely an issue but I’m only a rookie. There’s others here far more learned than i. You could look up almost any post by Lostgirl and that will get you well down the road just reading that.
Your ppms are too high causing lockout. The discoloration is from ph swing due to the lockout. Nitrogen toxicity is causing them to starve with food all around, they just can’t absorb it.
Yeah, I don’t really get the whole ppm thing and just used a conversion thing online. So basically it sounds like I need to just keep flushing?
Do you know, as I have always wondered can you just keep running water through fabric pots (i.e 6 gallons of water in 1 gallon increments in a 5 gallon pot) or should you stick to around 1 gallon of water in a 5 gallon pot and wait until soil dries to flush again?
I used to use happy frog. My plants were happiest at around 6.5 ph during flower. You can flush a bunch of water through at one time if needed. I’ve flushed fabric pots with up to 15 gallons in one session. Just make sure to let them dry like normal before flushing or watering again. I would try to flush to get ph up to around 6.5 and ppm below 1000. Then feed on next watering cycle.
Awesome, thank you for that information. It’s never really defined anywhere that I have found. I figured it would be fine, but at the same time was still worried that it would be detrimental to the plant. I will wait a few days until they are dry and follow your instructions.
I feel like I used so much water but I flushed last night.
I documented each step for myself and anyone curious. Got a couple phs a little lower than I’d like still but I stopped where I did because I started getting nervous when the leaves started drooping lol.
But hopefully the plants can start recovering and we can get back on track! Thank you once again to everyone in this thread.
Left hog ph 6.15 3.79ppt
Middle hog ph 5.77 4.84ppt
Right hog ph 6.29 3.44ppt start
Left Bk ph 6.47 2.24ppt
Middle Bk ph 6.34 2.26 ppt
Right Bk ph 6.17 2.62ppt
Left hog ph 5.99 2.27ppt
Middle hog ph 5.97 2.38ppt
Right hog ph 6.07 2.33ppt 1st flush
Left bk ph 6.22 1.42ppt
Middle bk ph 6.05 1.89ppt
Right bk ph 6.05 1.93ppt
Left hog ph 5.9 2.07ppt
Middle hog ph 6.06 1.77ppt 2 flush
Right hog ph 6.12 2.50ppt
Left bk ph 6.05 1.35ppt
Middle bk ph 6.29 1.44ppt
Right bk ph 7.16 1.80ppt
Left hog ph 5.80 971ppm
Middle hog ph 6.00 729ppm
Right hog ph 6.12 1.54ppt 3 flush
Left bk ph 5.99 1.60ppt
Middle bk ph 6.17 903ppm
Right bk ph 6.08 775ppm
Left hog ph 6.19 692ppm
Middle hog ph 6.18 691ppm
Right hog ph 6.25 876ppm 4flush
Left bk ph 6.18 581ppm
Middle bk ph 6.16 760ppm
Right bk ph 5.8 643ppm
