I know old post but i found it others will too... ok OG means ocean grown as mentioned by others. The reason OG is such a big thing is because they deal with salts better, due to having been developed from coastal strains.
Grafting does not change genetics but aspects of the host will begin to be shown in the grafted plant. Genetically it will be same
Grafting does not change genetics but aspects of the host will begin to be shown in the grafted plant. Genetically it will be same