Laguna Pond De-Icer Laguna Pond De-Icer helps prevent pond surfaces from completely freezing over and allows necessary gas exchange which is essential for keeping fish alive during the winter. Attached to a Laguna Pump, the De-Icer allows water circulation and oxygenation throughout the winter. Includes: • Styrofoam float. • Venturi valve. • Extendable riser stem.
