Hot Tub Works recommends that you change your spa filter at least one time a year! A fresh hot tub filter helps protect your health AND your pocketbook.
If your spa filter is more than two years old, you should toss it no matter how it may look. This is because your hot tub filter is made of a fibrous material that gradually loosens over time creating ever-larger spaces for particles to push through and gunk up your pump. It pays to be ruthless on this one. Hot tub pumps are way more expensive than spa filters. Consider it a law: two years and it's hasta la vista, baby!
Your not going to like this answer....but they are worthless! Go for a regular Pleatco or Unicel. The eco part is not worth the extra cost. Go ahead and get a "Frog" stick or floater for the mineral.
---former masterspa dealer.... Source(s): Prior member of the Association of Pool & Spa Professionals. Certified Service Technician - APSP National Swimming Pool Foundation - Certfied Pool Operator NSPF - Certified Educator Owner of a warranty repair center for over 70+ hot tub manufactures
