div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: · 2018-03-24 · Advantages of GEM GEM has many advantages over ben- tonite and rock salt Unlike rock salt it does not require periodic charging treat- ments or replacement And src=https:reader034vdocumentinreader034viewer20220422045ea5531d65a316383226cdd0html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: · 2018-03-24 · Advantages of GEM GEM has many advantages over ben- tonite and rock salt Unlike rock salt it does not require periodic charging treat- ments or replacement And src=https:reader034vdocumentinreader034viewer20220422045ea5531d65a316383226cdd0html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv