First indoor grow from bag seeds

Found the reason why leaves were yellowing! F@#king spider mites!! Treated with Yates Conquering oil. I have done two treatments so far and can't see anymore mites. Only two were really affected but treating all of them to rid the room of those little red monsters. Will do another 2/3 treatments to make sure they're all gone. Also been monitoring pH of water given and runoff and it's staying in the 6.2 - 6.7 range so I'm happy with that. Also lollipopped and defoliated them a bit to help with airflow.