The Waterco Opal or Theraclear 150 replacement filter cartridge has 150sq ft of filter media and is made by Magnum Filters in New Zealand for Aquatune.
Manufactured from quality Cartridge Element Media which is made of continuous filaments and does not weave out, heavier and sturdier making it better at capturing smaller particles to 10 microns.
The replacement filter cartridge is suitable for Waterco Opal 150; Paramount 150; Theraclear 150.
The Opal 150 may be upgraded to and Opal 180 which has more filtration paper and has the same dimensions.