Diagnosis?

What would you say the problem is?
In week 5 of flower in soil
10 Gal pot
Spider farmer 4000
Ocean forest soil, Build a soil organic flower top dress, recharge, oyster shell, azomite, and bio phos is all I use. Only plant doing this.
Soil PH 6.5
Temp 75 on 70 off
RH 50%
Thanks growmigos

Nute burn by the curling tips and colouring red. Also possibly a start of Cal mag deficiency due to yellowing leafs. That’s my thoughts p.