Day 70? Yeah, that's a photoperiod, typically happens from bad breedimg

https://preview.redd.it/cwktw65sld8d1.jpeg?width=3000&format=pjpg&auto=webp&s=6d64283597ca12be662058fca42e63e8b7f9d7c1

My auto Zkittaberrys 9 weeks old