When i have to transplant my plants

in normal way, how many time i have to wait between seedling and transplantation in 1liter pot ? Or which signe ?
I’m a bit confus because i see some people who say that we have to transplan directly after seed bloom and another tell that we have to wait till we see root bloom root riot
 
Ok i will do it but i read that i should dont over light the plantS at this stade

actually they receive 8500 lux , my hlg650 is dimmed at the lower level at 70cm if i put the light closer the plants will have to much light ? No ?
 
Top