All the seedlings got rid of their shells on May 15th. This is the date we usually count as the "birthday" of our plants.
So technically they're in seedling stage but the young ladies look more like early vegetative state as they grow quite fast. As a result we chose May 13th as the start and today, May 23rd, is the first day of week one in the vegetative state.
Watered with plain water. It is from a spring near our hometown. No PH adjustment, no additives.