Zeolites are alumino-silicate chemical compounds with sodium, potassium and barium cations. Zeolites have molecular-sized pores so that they are able to separate/filter molecules of a certain size. Zeolite 2 = 8-16 mesh = 1-2 mm is the appropriate size zeolite for use as a water filter, metal absorber, cation exchanger, chemical reaction catalyst, and soil nutrient enhancer. Zeolite 2 can also be used for fish and shrimp farming, as it can increase oxygen levels in the water. Zeolite 2 has many functions and benefits in the industrial and environmental fields.