Another 'homie' used to work in a refrigeration plant somewhere in west Texas, and said that plant produced large blocks of ice but they were generally clear. Although he did say the motion of the water in the freezing process, along with it's dissolved oxygen content, could produce ice like in the photo, but that was not the desirable result.
I think this is backwards. You can only get clear ice by very slow freezing, so all the dissolved air can escape. That’s called “consumer ice.” People want clear ice to put in cocktails, but reefer ice is just ice, so if it looks cloudy, no harm done. Freeze it as fast as you can.
