Search our extensive database
for answers to all your questions


How often do I need to replace the sand in my filter?

Rix recommends replacing 25% of the sand annually after the first two years. Looking at a grain of sand under a microscope it has a jagged appearance.  As water passes through the sand the ‘jagged’ edges ‘catch’ (filter) small particles and debris.  The water also wears the sand down, smoothing out the ‘jagged’ edges and diminishing the efficacy of the sands’ filtration.  For this reason it is important to continuously ‘freshen’ up the sand in the filter. 

Important note … ‘Pool Filter Sand’ is different than less expensive play sand and ‘construction sand’.  Play sand is too finely processed and does not have the ‘jagged’ edges that are essential for effective filtration.  Construction sand is full of metals and minerals that can ‘fall out’ of solution and stain pools.  Pool sand is processed and screened to achieve the correct particle size that is optimum for filtering pool water and it is ‘washed’ to rid it of the metals and minerals. 

Submitted By:
Jim Silverstein
Rix Pool & Spa
East Hanover, NJ

How often do I need to replace the sand in my filter?

Every ten years or so.

Submitted by: 
Greg Boyer
AM Corson's AquaValue
Mesa, AZ

  • How often should I be backwashing my filter?
  • How often should my filter be chemically cleaned?
  • How often should the sand in my filter be changed?
  • How often should I run my pump and filter?
  • My Polaris is not moving. What is wrong with it?
  • What is the difference between an overlap and a beaded liner?
  • If I have an automatic pool cleaner do I still have to brush my pool?
  • When should I open my pool?
  • If I am losing 1/2" of water a day in my pool should I be concerned that I might have a leak?
  • Why won't my pool hold chlorine?
  • I am having trouble keeping my pool clear. What should I do?
  • When I shock my chlorine pool it turns a clear green. Why?
  • Why does my pool have a very strong chlorine odor? Did I add too much chlorine?
  • Why is water coming out of my backwash hose when my multi-port valve is in the filter position?
  • How often should my reagents and test strips be replaced?
  • When using a salt system how much salt will be in my pool?
  • What type of salt should I use?
  • Will I need to add salt again after the initial dose?
  • What if my salt levels are too high or too low?
  • What pumps (cleaners, filters) do you carry?
  • Is a DE filter better than a sand or cartridge filter?
  • How long do cartridges (DE grids) last?
  • How often do I need to replace the sand in my filter?
  • My filter pressure is high, what should I do?
  • My filter pressure is low, what should I do?
  • I think my pool is leaking—how can I be sure?
  • How often should I backwash my filter?