Thin odd looking leaves

Hey everyone looking for a bit of help with my 2 plants, the leaves have been very thin and off looking on new growth and I'm unsure what's causing it or how to correct it.

I'm growing in coco under 600w hps.
4 weeks old, unknown strain (was told white widow but I'm not 100%)

Feeding 7ml per litre of nutes (recommended amount on bottle)
And 2ml per litre of cal mag.

I'm using tap water that I'm leaving overnight to dechlorinate and ph to 5.8-6.0.

Temps usually sit around 26c-28.5c with lights on but have had a few days of 30-31c.

They look fine bro it's just the strain. They do however look either over fed, over watered or thirsty. How often are you watering/feeding, if your in soil make sure you only feed every other time, in between feedings you should give them just water. Make sure the pots are light before watering/feeding.

I'm using coco, I fed 2 days ago. I water until I get around 15-20% runoff.
I'm always watering with nutes, do you think I should do a light nute water to flush and then resume?

Ozzie_kid420 said:

I'm using coco, I fed 2 days ago. I water until I get around 15-20% runoff.
I'm always watering with nutes, do you think I should do a light nute water to flush and then resume?

Click to expand...

Yes you should definitely do a light nute water but I'm not sure how often. @JohnDee will be able to tell you.

Ozzie_kid420 said:

I'm using coco, I fed 2 days ago. I water until I get around 15-20% runoff.
I'm always watering with nutes, do you think I should do a light nute water to flush and then resume?

Click to expand...

They look very thin because it’s new growth and do not flush everything looks fine continue your feeding schedule reduce how often you water leaves looking droopy

Hey man, do you know what your temps get to at night? Are you on a 24:0 light cycle? I used to have those leaves and struggled with it for awhile. They would appear on all the plants in my grow even if they were different strains, and at my buddy's house, too. We figured out it was low night time temps. It had me pulling my hair out trying to figure out if I had a Mg or Zn problem, or just what in the hell was going wrong. But I could tell that the growth was stunted.

Thanks everyone for the replies, I will water less frequently and see how it all goes
I will check the temps during the next lights out period, they are currently on 18/6.
How low were your temps getting out of curiosity?