Floating / Submersible Thermometer
All maintenance in the pond should be done on a water temperature basis, not the calendar. Just drop the thermometer in your skimmer or pond.
Comes teathered and is white in color.
8" Large Scale Thermometer
Blue Devil Submersible or Floating; Clam Shell. 8 inches long. Easy coverts to a floating thermometer with snap-on cap. It provides anchor tether that so you can tether the thermometer to pond surface.
Valterra Blue Devil 8" Submersible or Floating Thermometer # B8155C