What is premium? Size or what is inside? After numerous repeated experiments, it is clear everybody can grow with hydroponics at home with almost any hydroponics growing system.
The following pictures are 2 grow trays x 16 heads of Flandria buttercup after 40 days growing in a 19" x 19" area. Weight ranges from 174 g to 203 g with roots. Grown in 20 to 22 deg C, 18 moles of light per day, humidity at 65% RH. Texture and flavor is excellent.
As a home grower, I harvest on demand; thus, size is less important. What do you look for in a lettuce?
Two grow trays with 16 lettuce each 40 days. Ready for harvest.
