Chemzee is zeolite media can be used with all types of filter and is suitable for freshwater use. It is highly porous which allows the water to pass through where a chemical exchange takes place. This exchange allows ammonia to be removed which in high concentrations can be deadly to livestock.
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Just a quick note to thank you for the great service you have given me and to let you know all the fish arrived safe and alive. I am very happy with them and look forward to dealing with you again in the near future. - Dave P