The TS 600? That’s a 100 watt light.
Vpd seems good. 75f at 45% rh is right in range for mid to late flower.
All of your new growth seems healthy and other than some tip burn I don’t see any necrosis.
Intraveinal chlorosis (the yellowing of the leaf between the veins) from tip to stem is a sign of nitrogen deficiency, phosphorus deficiency, magnesium deficiency, and sulfur deficiency. It’s why I asked to see the rest of the plant to see how it’s doing. Based on the color of the veins in the fade and the pattern of the fade I’d say it’s likely immobile nutrient issue so my guess is sulfur deficiency.
Can’t be 100% though without seeing the nodal spacing and color of the branches and meristem.