The HOG1 is the medium size of the small HOG's and fits many AIO compartments (if you remove the tank's black covering) and all displays. If a larger tank, then the HOG1 is used for growing live food.
https://www.santa-monica.cc/HOG1-Ha...ber-surface--1-Cube-feeding-per-day_p_36.html
https://www.santa-monica.cc/HOG1-Ha...ber-surface--1-Cube-feeding-per-day_p_36.html
