First grow..first problem

This is my first grow and everything seems to be goin good but I have noticed one of my gelato33 plants leaves is showing signs that something isn't right..these plant are about 26 days in veg stage and they are planted in foxfarm ocean forest and I use flora nutrient..if anyone could help me out I would really appreciate

Dark green waxy leaves is a sign of nitrogen toxicity. You are probably over feeding them. FFOF comes with nutrients already in it that should last about a month.

I had planned on transplanting into 3g pots today..would that be ok without any extra nutrients?or would that be too much nutrients at the moment also?