Quick question while I'm driving, if I wanted to transplant my little over 2 week old seedlings into a 1 gallon grow bag what would be my best indication it's time to transplant due to the loss of one of my babies I was able to cut it open and see the roots were filled throughout the cup so when I cut it out of the cup it help the shape of the cup with nice healthy roots. When is a good time to transplant seedlings and also these seedlings are in ffof soil can I fill one gallons with perlite and just throw the plant with its cup shaped soil in there will it thrive?