These are 65+ grams in size

A 100% new and unique formula to provide the best results possible! Your shrimp and snails will be drawn to the RootMedic Mineral Rock like zombies on the hunt!

Contains ingredients that help maintain healthy exoskeletons, promote breeding and growth. There will constantly be shrimp and snails grazing on the Mineral Rock.

These las easily 6 months to a year! When placed in tank sometimes a small crust forms and comes off, but usually this is not the case. It is 100% normal to happen. Clean once every couple of weeks with a small toothbrush and your shrimp will think you gave them a whole new bag of crack!