Use the same process your filter housing manufacturer recommends for sand!
Backwashing process for Pools/Spas and Water Features
Expect your pressure to drop significantly upon installation as FilterBalls produce very little backpressure—less than 1 PSI
Record the starting PSI, backwash when the PSI increases by 5-7 PSI.
Expect to backwash much less frequently FilterBalls hold over 20X the amount of dirt as sand before it reaches the pressure increase by 5-7 PSI requiring backwashing. Typical residential pools backwash monthly.
When you backwash, don’t expect to see a puff of dirt in the site glass as you see with sand. The dirt release occurs evenly during backwash
Recommended duration of back wash is 2 to 3 minutes
Expect some dirt or large particles to remain in the media, the media is just doing its job!
After backwashing, your pressure gauge should return to the original pressure.
Over extended time, if your starting pressure after backwashing is not decreasing, it means the FilterBalls are no longer release dirt. It is time to clean or replace them.
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