Leaves light Green? Some kind of deficiency?

Thanks Bro, probably I am going to check runoff ph. If ph is okey, I am going to veg a little bit longer on this pot, maybe 3-5 days and transplant to the biggest pot. Just one more question, the grow temperature is a little high 30-32⁰C Max, do you think this problem in the leaves can be related to temperature?

She's definitely big enough to withstand a proper transplant or you could veg a little longer so her roots are better pronounced. It does look like she's starting to get hungry so I would start giving nutes, like you said in the comment section, start with a low dose then bump it up, she should be able to handle at least 100ppm of nutes

Should I start nutrition for her - maybe 1/8? should i just transplant? should i transplant and start nutrition? my substrate is composed of 90% peat + perlite and 10% humus. another thing I noticed was that the older/lower leaves are darker in color, but new growth tends to have that more yellowish color.