HOG stands for high output garden. I believe they are canadian based, and it's a nutrient company.

Last grow I used their three part and was curious about the rest of their additionals. Tried the "Gold Storm" which is supposed to boost terpenes and oils, and I noticed a huge difference.

Took the dive and bought their full $99 kit, so far I am very happy! Looks like my yields will far surpass last round.