Kent Marine 02120 Hydrometer

Made from the same super-durable, puncture-resistant, non-toxic rubber as classic Kong toys, this versatile, bone-shaped chew is just the thing for the home-alone dog. The innovative design features holes with patented Goodie Grippers on each end. Stuff the holes with biscuits, dry foods, or Kong brand Stuff ‘n pastes or treats, and watch your dog go to work extracting the contents.

Kent Marine phosphate sponge is a ceramic medium which will adsorb phosphates quickly when placed directly in the water flow. Also absorb moisture for use as an air dryer for ozone and can be renewed over and over in moisture removal service. Works in fresh and saltwater aquariums or ponds.