I’m using miracle grow soil mix with topsoil just feeding them bottles of water because I haven’t got my ph kit yet still a new grower but temps been fine power was out for like 8 hours one day I brought them up into the light but it didn’t happen till about 2 days after but rest of the plant is fine
Miracle Grow has lots of time release nutes in it, that I have seen many people use to start. That is most likely your problem. Maybe repot in different soil, will cure your problem....my thoughts.,