Oh... What did I do???

[Ponky]

Hot AF. Nutirent lockout probable. Or the nutrients are of inferior quality. Hard to guess that. But I always recommend a good flush. And restart your feed next water. I would literally rinse those plants out with a hose for like 20 minutes. Trim off anything that is too damaged. And just let them recover.

 

[ComfortablyNumb]

Flushing soil is throwing away food.
Soil should never have to be flushed unless you are adding other food products.

 

[Lacey]

Hot AF. Nutirent lockout probable. Or the nutrients are of inferior quality. Hard to guess that. But I always recommend a good flush. And restart your feed next water. I would literally rinse those plants out with a hose for like 20 minutes. Trim off anything that is too damaged. And just let them recover.

Its been in the low 100s here. It could be a combo of things.

 

[Lacey]

Before you do anything else,

How much and how often do you water?

We water about every other day. We let the soil tell us when to water. I water at night.
We water from the hose, so its hard to tell how much water they are getting.
We fert once a week at night.

 

[Lacey]

Flushing soil is throwing away food.
Soil should never have to be flushed unless you are adding other food products.

I understand that. We are on a well with hard water. There are times that a flush might be needed.

 

[Lacey]

You shouldn't listen to what the hydro store guys say. You should know what the EC of your nutrient solution is with Maxisea so you could of matched it with MaxiGro. That is the best way to grow, by knowing what you are giving your plants.

Full strength MaxiGro is like 2000 ppm or somewhere close to that, which is gonna be very high for most plants.

EDIT: So I just looked up Maxsea and the directions say use 1 tablespoon per gallon, Maxigro is 1-2 teaspoons. So Maxsea is actually alot stronger than Maxigro which is probably the issue.

That would mean they didn't get enough fert with the Maxigro? But would that cause the leaf curling?

 

[ComfortablyNumb]

I understand that. We are on a well with hard water. There are times that a flush might be needed.

If you feed liquids, you can get buildup and lockout. Dry nutes don't really do that when fed correctly.
If your water is that bad, get a hose filter to water with.
Something like this:
http://www.amazon.com/Camco-GardenPURE-Filters-Gardening-40691/dp/B00G2586NK/ref=sr_1_9?

 

[ComfortablyNumb]

That leaf curling look like the plant saying it's over watered.

 

[Ponky]

Maxigrow should be a high quality food. And it shouldn't be an issue feeding it at full strength. 100 F plus is pretty extreme. It's probably 90% of the issue.

 

[Ponky]

Flushing soil is throwing away food.
Soil should never have to be flushed unless you are adding other food products.

I use the flush method because when I show to a place it's because the previous guy fucked up the show. And ghosted. So it's a quick easy way to start up again. I also did it when I was using this cheap local grow store food and it went bad. If you know what food has been used and in what amounts you have a better idea of how to proceed. And don't have to clear flush.

 

[ComfortablyNumb]

I use the flush method because when I show to a place it's because the previous guy fucked up the show. And ghosted. So it's a quick easy way to start up again. I also did it when I was using this cheap local grow store food and it went bad. If you know what food has been used and in what amounts you have a better idea of how to proceed. And don't have to clear flush.

Very true. Being an Organic grower makes me worried when I hear of someone flushing soil. But there are times...

 

[Lacey]

Here are the numbers.
Ph is 7.3
PPM is 1460
Water temp is 84.4

 

[ComfortablyNumb]

7.3? Bring it down to 6.5, maybe lower...
What is the root temp?

 

[Lacey]

What is the root temp?

How do I get a root temp?

 

[ComfortablyNumb]

Use a no-touch thermometer and take the temp of the lowest part of the pot.
Get your pH down to 6.5 or lower maybe.

 

[Ponky]

Not a lot of dissolved oxygen in water that is 84 degrees.

 

[Lacey]

Get the equipment you need first and check the nutrient strength of both maxsea and maxigrow at the rates per gallon that you were using. That way you know what you were giving them, then report the info back so we can try to help. It's very difficult to give advice without knowing the numbers and I don't want to say its this or that because it can cause more issues.

Here are the numbers
PH 7.3
PPM 1460
Water temp from run off is 84.4 (just incase thats needed)

 

[Ponky]

I checked some stuff. Your nanomols of dissolved oxygen per liter is too low. You need the water to be cooled to less than 74 F ideally. With 70 being essentially ideal. Then aerate with air stones for several hours. Lower the PH. The 6.5 or so. Roots may be suffering an anaerobic bacteria may be outcompeting the stuff you want. But I'm no scientitian.. somebody here knows about this stuff for work for sure. Like a fisheries guy or lab tech.

 

[Ponky]

https://www.fondriest.com/environmental-measurements/parameters/water-quality/dissolved-oxygen/ section 4 first section has a diagram to explain. This source appears very thorough.

 

[ComfortablyNumb]

If it comes down to it, then flush and then replant in coco so you can continue using the food you have.
Or, replant in clean soil and get rid of the other food.