.75" Nominal Thickness
Rigid, Continuous-Density Design
Filters debris as small as 30 microns
No additives or adhesives
Manufactured in the USA
Puro-Kleen® Perma-Guard is a 0.75" thick rigid biological aquatic filter media, making it an excellent choice as a pre-filter wrap or skimmer filter. The large fiber composition will trap debris down to 30 microns, while allowing positive microbiologicals to pass through. Puro-Kleen® Perma-Guard also works very well as a pre-filter layer in conjunction with Puro-Kleen® Ultra-Guard or Puro-Kleen® Kleen-Guard filter medias. Like all Puro-Kleen medias, Perma-Guard contains no added chemicals or ant-microbial agents which can harm aquatic life.