Whelp....blurple pictures dont help one bit. Likely the spots are yellow under white light. But you should rephrase your question cause the root problem is showing itself in your growing tips. Those tips are hurting-bad. Theres burn, deformity, some chlorosis that needs to be looked at under white light. Too much of something very likey, drastic pH change or shock or majorly lacking something.
Better pics under white light will help people with solving your dilemma.