My 1st grow

Looks more like a potassium and phosphorus deficiency. Have you increased the bloom feed sufficiently since it started flowering? It also needs the rest of its diet. If your diary is right it appears you are not providing any micro nutrition. I would also check ph. You may also have moved light too close too soon. Plus 24 hours light is not ideal for equipment or plants. They need rest. 20/4 max on a autoflower.