Patents Assigned to Precision Aquarium Testing Inc.
  • Phosphate removal from aquaria using immobilized ferric hydroxide
    Patent number: 5124044
    Abstract: Immobilized ferric hydroxide selectively removes phosphate from aquarium water. The material provides a healthier environment and retards growth of undesirable algae and bacteria.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: June 23, 1992
    Assignee: Precision Aquarium Testing Inc.
    Inventors: Edward J. Cassidy, Ronald D. Jones