Lower leaves dying faster and faster

[Anhony54]

Ok growing Lemon OG with 707 soil I use roots organic Chemical woth Co2 burner I do 2 chemical waterings than 1 regular water I believe my humidity was at 30% while in veg made a mistake my heat has been getting around 80 with the co2 burner I will post pics not sure if its nute lock out my humidity is at 50% in flower the ph and ppm readings are my runoff any help will be appreciated

 

[spek9]

Water pH 9.16? Is that right?

If so, that's WAY too high.

 

[Anhony54]

Yes thats my runoff

 

[spek9]

Yes thats my runoff

What is it when you put it in? What does this "707 soil" consist of? Is it really soil, or is it peat or coco based?

 

[FastFreddi]

As stated, that ph is too high, and obviously your root zone is suffering.
Try next watering at a low ph, around 5, then measure run off. Try to get that ph to around 6.5 + or - a point or two.
Good luck op.
FF

 

[xtsho]

That didn't happen overnight. I'd water with plain 6.5 pH'd water and clean all the dead stuff out and go from there. You don't want to go from one extreme to another. And I see a gallon jug of GH pH Down on the floor. Have you been using it after mixing your nutes?

 

[Anhony54]

That didn't happen overnight. I'd water with plain 6.5 pH'd water and clean all the dead stuff out and go from there. You don't want to go from one extreme to another. And I see a gallon jug of GH pH Down on the floor. Have you been using it after mixing your nutes?

Yes usually use ph up after a chemical mix

 

[Anhony54]

Yes usually use ph up after a chemical mix

Should I flush ?? I always keep my water between 6.3-6.6

 

[FastFreddi]

Should I flush ?? I always keep my water between 6.3-6.6

 

[xtsho]

Yes usually use ph up after a chemical mix

You're using pH up? What are you feeding? That will raise your pH not lower it. Also, silica products will raise your pH as well in case you're using any.

 

[Anhony54]

You're using pH up? What are you feeding? That will raise your pH not lower it. Also, silica products will raise your pH as well in case you're using any.

After Im done mixing Trinity, Terminex, budda bloom, surge, cal mag, ancient amber and malasasis

 

[Anhony54]

After Im done mixing Trinity, Terminex, budda bloom, surge, cal mag, ancient amber and malasasis

Also on a well i have a reverse osmosis so when I flush can I use straight well water ppms usually around 600 but if i use reverse osmosis system its around 50ppm

 

[xtsho]

Have you done a water sample of what's in your well water? I wouldn't dump 600 ppm well water on my plants without knowing what's in it.

I don't see why you're adding molasses. Half those bottles of Roots Organics product already contain some. You must have used too much pH up and raised the pH significantly. How are you mixing your nutes? I'm not a fan of those nutrients but they wouldn't cause that issue.

How often are you watering and what soil is that? You can get root rot in soil by keeping it too wet and the symptoms can start from the bottom and work their way up as the new growth steals from the older growth to survive.. You can also create an anaerobic environment devoid of oxygen which is very bad for your plants. Regardless, I typically say pH runoff is not a reliable method to check pH and I still believe that. A slurry test is the accurate way to do it but your pH is so high it's apparent something is not good. When was the last time you calibrated that pH meter and how are you storing it when not in use? I find it hard to believe that you're pH is even close to that high. That's a higher alkalinity than sea water which is 8.2 pH. 9.1 is like baking soda.

 

[Charsiguy420]

I hate to say this but are you sure your ph meter is calibrated at this time? I have same ph meter and tds got it from aliexpress. the ppm meter works good or so i think it does because it shouldnt need calibration but that ph meter has cost me badly in the past because I never calibrated it for almost 8-9 months and after calibration it turns out the the previous readings have been -/+ 1-2 ph.

 

[Anhony54]

Have you done a water sample of what's in your well water? I wouldn't dump 600 ppm well water on my plants without knowing what's in it.

I don't see why you're adding molasses. Half those bottles of Roots Organics product already contain some. You must have used too much pH up and raised the pH significantly. How are you mixing your nutes? I'm not a fan of those nutrients but they wouldn't cause that issue.

How often are you watering and what soil is that? You can get root rot in soil by keeping it too wet and the symptoms can start from the bottom and work their way up as the new growth steals from the older growth to survive.. You can also create an anaerobic environment devoid of oxygen which is very bad for your plants. Regardless, I typically say pH runoff is not a reliable method to check pH and I still believe that. A slurry test is the accurate way to do it but your pH is so high it's apparent something is not good. When was the last time you calibrated that pH meter and how are you storing it when not in use? I find it hard to believe that you're pH is even close to that high. That's a higher alkalinity than sea water which is 8.2 pH. 9.1 is like baking soda.

I dont use the 600ppm water I use the reverse osmosis just takes forever to flush I use a stick to mix nutes and ph tester is newer about a month old and was just calibrated im switching over to heavy 16 here in the next week or so do u suggest I bring in fresh air from the outside

 

[xtsho]

I dont use the 600ppm water I use the reverse osmosis just takes forever to flush I use a stick to mix nutes and ph tester is newer about a month old and was just calibrated im switching over to heavy 16 here in the next week or so do u suggest I bring in fresh air from the outside

Switching nutes isn't going to fix that and when I mentioned an anaerobic environment I was referring to the root zone of the plants in the pots of soil. Bringing in fresh air from outside will do nothing to fix a condition like that caused by excessive overwatering which was just something I mentioned as a possible cause.

 

[Anhony54]

Switching nutes isn't going to fix that and when I mentioned an anaerobic environment I was referring to the root zone of the plants in the pots of soil. Bringing in fresh air from outside will do nothing to fix a condition like that caused by excessive overwatering which was just something I mentioned as a possible cause.

Its not from overwatering I water every 2 to 3 days

 

[sensi8739]

Best bet is to find a nutrient that self-buffers, and one that is designed for hard water. Even if you pass the water through reverse osmosis, it doesn't change the alkalinity, but it does make it easier to buffer one direction or another. With well water, you want to use the nutrient at the lowest dose and use it every time you water. It will act both as fertilization and as a water conditioner. Raise the nutrient dosage as the plant gets larger/looks like it needs it.

Another thing you can try when your medium is alkaline is to top dress with a little gypsum, then do what I said above. It won't change the PH of your medium, but it should free up nutrients that are locked out from PH issues, and allow them to be locally uptaken by the roots.

Finally... hate to ask, but how long has this plant been vegetating? It has a look like it has an overgrown top canopy which is not letting enough light penetration, and so you get lower canopy die-off. You'll want to trim that out, probably thin the upper canopy as well, and let the plant re-focus on fewer growing nodes. Don't be shy!

Also check the root ball... Is it root-bound? Once the medium is filled up and choking on it's roots, things like that also start to happen. I've been there a few times due to neglect for sure.

 

[Anhony54]

Best bet is to find a nutrient that self-buffers, and one that is designed for hard water. Even if you pass the water through reverse osmosis, it doesn't change the alkalinity, but it does make it easier to buffer one direction or another. With well water, you want to use the nutrient at the lowest dose and use it every time you water. It will act both as fertilization and as a water conditioner. Raise the nutrient dosage as the plant gets larger/looks like it needs it.

Another thing you can try when your medium is alkaline is to top dress with a little gypsum, then do what I said above. It won't change the PH of your medium, but it should free up nutrients that are locked out from PH issues, and allow them to be locally uptaken by the roots.

Finally... hate to ask, but how long has this plant been vegetating? It has a look like it has an overgrown top canopy which is not letting enough light penetration, and so you get lower canopy die-off. You'll want to trim that out, probably thin the upper canopy as well, and let the plant re-focus on fewer growing nodes. Don't be shy!

Also check the root ball... Is it root-bound? Once the medium is filled up and choking on it's roots, things like that also start to happen. I've been there a few times due to neglect for sure.

 

[xtsho]

Those plants look like they've already started flowering. Don't know if you want to go trimming anything off the top now.