Finishing week 7. I did a light switch to mars1000, running at full power (150w).
Seems growing fine, there are some bugs, but for now i'm not going to perform any action.
I would say you have at least a week most likely two though. I would invest is a little Carson microscope from Amazon. The blue one work great and is around 10-15usd. That is the only real way to be sure. Looking good and happy growing!!!