Is this a nute deficiency or something else?

Hi.

I was wandering if this is some sort of deficiency. The leaves of 3 of my Haze strain have a slightly lighter green colour running through them and the leaves are curling ever so slightly. I thought it may have been a mixture of N & K deficiency, they have only been fed twice (under half the recommended amount for first feeds)with organic feed with higher N&P, with one water in between and on a 3 day cycle to let soil breathe. They're in their 3rd week since germ. The light is 1.5m away, I have a fan circulating and the temp is 20-23degrees.

Pictures are attached (sorry for bad quality)

Can anyone help? Thanks

how big r u pots.sure don't look like haze.[fat leaf]

I would try upping your feeding amount but go slow bro, they are starting to look hungry to me....??

Thumper - Pots are still small at mo 2 litre.

Sylone - Thanks mate. would be best to feed more regular or increase nutes?

Thanks

they are starting to get hungry for nutrients . time to feed them.