PURE Marine uses groundbreaking technology to maintain crystal clear and healthy water in marine aquariums. We recommend that you use PURE Marine as part of your regular maintenance programme. You cannot overdose with PURE Marine. To maintain crystal clear, healthy water add 3 PURE Marine balls per 10 gallons of water once a week into your marine aquarium filter. Alternatively, place the balls in a filter bag and position in the tank or the filter in an area with good flow.
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