Leaves curling upwards ???

[Tim1987]

TBH 900ppms, is right on the limit for mine too.
I always judge my ppms by my runoff too.
Always. Period

 

[Wilksey]

Oxygen should not be a problem at all.

That depends on the coco and how you pack it in your pot. If you've got a lot of "fines" in your coco-product, then that shit will limit the amount of oxygen available to your plants, they won't dry out as fast as they should, and they might get pissy and start to droop. Coco with larger pieces is less susceptible to this issue, as is coco with a good mix of perlite.

I think the hardest thing to figure out using coco is finding that sweet spot between water retention and aeration, but when you can, you can pretty much water your plants at will without ever worrying about over-watering them.

 

[Coloradodreaming]

What are your ppms!!!!!!!
You're working blind. Especially in coir.
I run 100% coir. I hand water/feed once in the morning, and once in the afternoon, a few hours before lights out. Oxygen should not be a problem at all.
I feed or water, until 15-20% runoff.
I'm currently feeding 900 ppm of nutrient. Mine's a 5.3.9. Third week of bloom.
900 ppm, works out about 24mL per 9L of my water. I use tap water, less than 200ppm. I don't get a read with my truncheon.
Problem with coir is, you don't know how much it's leeching, without a ppm meter.
It could be leeching sodium or potassium, and you have no idea.
Salt will make a plant look extra thirsty. Even when the coir is saturated. It will also wilt like you have rot. Leaf tips will do all sorts of crazy too.


Does your plant feel dry? Kind of like sandpaper?

No the leaves still feel smooth

 

[Coloradodreaming]

That depends on the coco and how you pack it in your pot. If you've got a lot of "fines" in your coco-product, then that shit will limit the amount of oxygen available to your plants, they won't dry out as fast as they should, and they might get pissy and start to droop. Coco with larger pieces is less susceptible to this issue, as is coco with a good mix of perlite.

I think the hardest thing to figure out using coco is finding that sweet spot between water retention and aeration, but when you can, you can pretty much water your plants at will without ever worrying about over-watering them.

I'm using Batch 64 pioneer blend. I'm going on day 3 of not feeding them and they are starting to perk back up

 

[Tim1987]

I'm using Batch 64 pioneer blend. I'm going on day 3 of not feeding them and they are starting to perk back up

Yeah that's good.
If they're improving, with water, it's gotta be too much food.

Great news dude

 

[Tim1987]

That depends on the coco and how you pack it in your pot. If you've got a lot of "fines" in your coco-product, then that shit will limit the amount of oxygen available to your plants, they won't dry out as fast as they should, and they might get pissy and start to droop. Coco with larger pieces is less susceptible to this issue, as is coco with a good mix of perlite.

I think the hardest thing to figure out using coco is finding that sweet spot between water retention and aeration, but when you can, you can pretty much water your plants at will without ever worrying about over-watering them.

While I agree with you.
The fine coco peat, is my favourite, out of all of them to run 100%.
Ive found the croutons etc, really hold back nutrient. Then discharge them, when you need it least.
I'm using a blend of crouton, fibre, and peat this run. While everything is really healthy, I'm definitely going back to coco peat next time.

 

[mista sativa]

They look pretty good if you ask me. I grow in no till organics, so take this with a grain of salt... but if my plants looked like that, the only thing I would do is create more air circulation, and double check light distance and exposure. They look pretty healthy otherwise