A specially selected blend of zeolites. For use in marine and freshwater aquaria. Zeo Mix should be replaced every 6 weeks, the volume to use is between 100-500 ml per 100 liters of water in the aquarium. Zeolites do not require shaking – they can be placed in fluidised filter. The recommended flow through the bed is 300-500 Ltrs /h. Zeo Mix should be used in coral reef aquaria only by experienced aquarists as the zeolites have very high adsorptive properties, potentially leading to water being stripped too fast of elements. US: 3.5 oz.-17.5 oz. for 27 US gal. of aquarium water. Keep away from children! Product for aquarium use only! Not suitable for human consumption!