Color going out of leaves almost yellow

Hey guys the last few days my 2 plants leaves have been getting really light turning yellow. They are in coco/per mix under 630 watt cmh light. I water ph 5.8 feeding AN grow/micro/bloom They look alot more yellow in person compared to the pic.

Are they rootbound? You may be over watering. Are you allowing the pots to dry out before next feeding? Coco does good with dry cycles and fresh water flushes in the beginning to establish root structure. Once rootbound they can be water as much as you like

It might be to much water I am still hand watering every 3 to 4 days untell i get a good root mass then going to hook them on the res.

Coco prefers to stay moist. Only had problems when I let it dry out completely. Plants use the nutrients in the water but don't absorb all the moisture. Also, the combination of coco and cmh lighting causes calmag deficiency. Calimagic or calmag+. But remember that calmag+ will add nitrogen. Good in veg but takes up space in nutrient profile for bloom cycle. I started with a PH 5.8, but had to raise it to 6-6.2 where calcium and magnesium are better absorbed.
If you want some very proven nutrients, use the Canna coco line. Use their 2part base nutrient, Rhizotonic for sure, and Cannazym. Dontworry about using cannaboost or their p/K boost stuff. Those ones are very expensive and similar items out there are cheaper.