Hallo I hava 5 seeds growing in their starter pot it is 400ml or 500ml i'm not sure. How big i can let them grow till I transplant into ground? I want them to make good roots and to be enough tough to survive outside. Now they are on my terrace where they get like 6-7 hours of direct sun light. they are less than 2 weeks old and now they are growing their 2nd leav set. edit: how can I minimaze streching when growing with sun light?