Pretty much every adjustable office chair cylinder will let you down after a few years of use. This happened to me when my expensive ergonomic chair started sinking 4 years ago. I thought there had to be a better, easier, more cost effective way to fix a sinking office chair other than throw it away...

This sinking de-icer will sink to the bottom of the tank and is thermostatically controlled with an automatic shut-off. Since it operates at the bottom of the tank, it is less likely to be disturbed by livestock. Each unit comes with a galvanized wire guard/stand. With the guard in place, the sinkin...

The best choice you can make for your goldfish. Formulated specifically for the sensitive goldfish digestive system, these sinking pellets are 100% meal free and contain significantly less starch than other goldfish foods.