2 weeks in dwc

hi i have 2 clones in a dwc been 2weeks since there been in there im getting some yellows leaves comming up on them not real bad all new growth looks perfect not to sure if its old growth dieing ill attach some pics if som1 might no what it is i use a 600 watt hps water temp sits between 19-22 room temp is 26-28 canna nutes

IMO- they look good, I won't worry about it. the new growth look good.
I would cut those couple of yellow leaves off.
If any more leaves start yellowing you might have a problem, But I think everything will be okay now from the green new growth

Good Luck on your grow.

Looks like it's nutrient deficient. I would start feeding it nutes. Growth is not suppose to be dieing like that at such a young age, you have a problem that's building up and will eventually spread through the whole plant.

It needs Nitrogen and other vital nutrients and micro nutrients.

ahhh ty topfuel29 i think ill leave it like ya said if i see any other probs ill post some picks up oz grower87 i have been applying nutes since week 1 im up to 3 ml per ltr of a-b of canna nutes im just using recamended dossage from canna web site but if i see any more leaves kicking it like that ill raise the nutes by another ml or 2

thinking it might be tip burn ill but some more pics up as i have more yellow leaves starting from the tips of the leaves damn it or could ph do this ?? mine is on about 5.8