it's not 1.5X.......it's 4X length, and 2X widthWell the inch per gallon is pretty unrealistic in the world of cichlids, the 4X length and 1.5X width guideline is at least manageable and reasonable housing for the fish on a long term basis. I have kept many 12" fish in 75G tanks and it is adequate however the smallest I would go for them.

