Prismarine Shards are items added in 14w25a that can be obtained by defeating the Guardian mob. They can be crafted into Prismarine variants such as Prismarine Brick and Dark Prismarine.
After veg they will usually flower for anywhere for 8 to 9 weeks. The breeder recommends growing Jack Berry F2 in a SCRoG type grow, where the yield can reach above average, at best. This is a strain that spends most of its energy developing trichomes, rather than bud mass. Don't expect huge yields with this one. In most cases, it simply isn't possible.
F-2 Dependent. F-1 Spouses and Dependents. To qualify for F-2 status, a spouse or unmarried minor (under age 21) child must establish to the satisfaction of the consular officer and the immigration officer at the port of entry that:f the F-1 student falls out of status, then the F-2 falls out of status as well, because his/her visa status is a derivative of the F-1. Keep in mind that like F-1 students, F-2 dependents are required to keep their passports valid at least 6 months into the future.