Each bag is approximately 3 ounces. (More weight same price for 2019!)
Bag measures 3 inches by 3 inches.
Greensand forms in anoxic marine environments that are rich in organic detritus and low in sedimentary input. Having accumulated in marine environments, greensands can be fossil-rich, such as in the late-Cretaceous deposits of New Jersey, USA.
Keep this in the crabitat at all times as a staple. It’s nutrient rich and your crabs will love it