Leaf curl.. Please help

[silentbob]

Half of my autoflowers leaves are curling down like claws and some are all wilted although they're still growing and green..
Ph is 6 ec at 1.0 ec seems to stay stable so I guess they're fine with the nute strength.? Under 600w air cooled hps about 1.5feet away.. Room seems to stay around 23.c but can sometimes drop to 18ish when lights arent on.
Any one know what's causing them to look like this?

 

[silentbob]

The pumps running 15mins each hour.. Have the reservoir on a tilt to avoid pooling. Overwatering?

 

[silentbob]

Gettin yellow tips on the leaves now aswell.. What am I doing wrong.. I would have thought ec1.0 would be ok for them at 2weeks..?

Growing auto silver haze in nft btw

 

[Northern Grower]

One of the hydro guys will have to chime in. I am an organic soil guy but it does look like they might be getting too much water. I am assuming you have air stones running in the res?

 

[420Grouch]

I'm no pro but but I would like to suggest you have some sort of potassium deffeciency, what are you feeding them?

 

[420Grouch]

http://www.autoflower.org/f7/basic-deficiencies-list-11.html

 

[silentbob]

Havnt installed the airstones.. They've been in the nft for a week been a busy week will get the airstones in tonight or tomorrow.. U think they're lacking o2
I'm feeding them canna aqua it's supposed to be specialised for recirculating systems like the nft.

I will switch the pump timer to 15 min every 3-4 hours and see if they pick up..

Any other advise is gold..

Calling out to the hydro guys!

 

[silentbob]

Thanks for the link grouch! Sounds like bailer is write from what the giude says and does look like ove watering..

I'll let you guys know how it goes.

How long into the plants life do you guys see the veg growth spurt..
I'm expecting the babies to shoot due to their short life but growth seems to be slowish

First time I've grown anything auto