FilterBalls™ FAQs

We have captured the common questions we receive from pool suppliers, pool owners, and from our research on other filter media reviews you might find on the Internet. We will continue to add your questions to this link as you raise them.

  1. What does FilterBalls mean for Clean Technology?

Clean technology or CleanTech refers to any process, product, or service that reduces negative environmental impacts through significant energy efficiency improvements, the sustainable use of resources, or environmental protection activities. Clean technology includes a broad range of technology related to recycling, renewable energy (wind power, solar power, biomass, hydropower, biofuels, etc.), information technology, green transportation, electric motors, green chemistry, lighting, Greywater, and more.*1

In the business of water filtration, we have talked about the reduced weight and energy savings you realize by converting to FilterBalls. But FilterBalls is much more.  FilterBalls offers the only completely renewable technology that also avoids health issues with filter sand dust (Silicosis) and muscle strain.

Whenever you decide to replace your FilterBalls, simply discard the used filter media in your recycling bin along with other plastic products.  By using FilterBalls, consumers reduce the demand on silica and quartz natural resources mined for filter sand. The American Lung Association and OSHA also warn that occupations that handle filter sand should avoid silica dust inhalation that can cause lung disease from silicosis.  No more potential muscle strain as you no longer need to transport, replace, and dispose of heavy sand once you convert to FilterBalls.

*1 Source: Wikipedia,

  1. Do I really save money with FilterBalls?

Absolutely! Sand and other filter media are more expensive particularly  when you consider shipping, handeling and transportation costs. It take energy to overcome pressurizing a vessel, because FilterBalls increases your water flow with reduced pressure, your pumps are working less.  In fact, your pumps do not need to run nearly as long to move the total volume of water in your pool through the filter system. So with less power consumed, you save money on your monthly electricity bill and you should find your pumps lasting longer with less maintenance.

  1. We installed FilterBalls this summer and for the first time the water pressure never increased requiring backwash. Is this normal?

Yes, with FilterBalls you enjoy the full depth of the filter media to capture matter and filter more particulate before needing to backwash.  So you should be backwashing less frequently.

  1. How does FilterBalls perform during backwashing? Will I find fibers shedding from backwash action?

FilterBalls were designed to tolerate the violent agitation of the water flow during the backwash cycle.  As a fact, in design of this media I counted on the collision of the FilterBalls to jar loose those particles that might have worked deep into the media.  It’s why FilterBalls is the poster child for the definition of a depth filter media.   We tested FilterBalls not only in our own lab but also in third party labs located in Michigan and the Carolinas. As a result the lack of fiber migration is one of my patent application claims.  We use a proprietary thermal bonding process so the fibers stay in the form you see when you install them in the filter vessel.

Cheap paper (cellulose based pleated filters) and all melt-blowns and string wound filters have fiber migration.  The more expensive Polyester or Polypropylene pleated cartridges have much less, but you are paying for that as well.   Cellulose based media breaks down more rapidly in chlorinated and salt-water pool and spas.

  1. FilterBalls are very large when compared to sand particles. It seems it would be easy for unfiltered water to bypass and go around the Filterballs as they begin to load with particulates.

Bypass occurs in string-wounds and sand filters, the industry term is called channeling.   Sand in hydrophilic, which in simple terms means attracts water, which is why sand is so heavy when wet. It absorbs water and the frictional forces on the surface of the sand particles are what wear it smooth and cause the high differential pressure you see when the pump is running.  FilterBalls do not have that problem because we are hydrophobic.  Which simply defined means “repels water”.  Water always chooses the path of least resistance. Unlike sand that has a propensity to channel or bypass, FilterBalls provide multitudes of paths of low resistance trapping particles that are suspended and removing them, allowing the clean water to exit out the lower manifolds.

One exception: When the filter is small or has a bed of less than 12 inches deep, FilterBalls minis or a blend of Minis and FilterBalls is recommended to avoid potential problems with bypass.

It is worth mentioning that water flows through the FilterBalls, the agitation or movement of the water does have the affect of nestling the FilterBalls together forming a rather tight batting of media.  Only the backwashing or reverse agitation breaks them apart again causing the trapped dirt particles to be washed out to drain.

  1. Do I get better results in my pool if I use finer micron rated FilterBall product like Sanz?

Not really. Generally, we recommend FilterBalls Blu or Blu-10 for pools.  Sanz offers our finest filtration level and is a product designed for pre-filtration jobs used in food and beverage and drinking water applications. The finer filtration is more than you need in most pool and spa applications.

  1. Can I use Filterballs in my existing sand vessel?

Yes, FilterBalls are made for use in all sand vessels. To determine how many bags of Filterballs you need, use just one 1-pound bag for every 100 pounds of sand you usually use.  A common 300-pound sand filter will need just 3 pounds or 3 bags of FilterBalls.

  1. Can I replace my zeolite with FilterBalls?

Yes, when you replace zeolite, replace 50 pounds of zeolite with 1 pound of FilterBalls.

  1. Do FilterBalls float?

No, FilterBalls are made of polyester and do not float.  You should remember to purge your filter vessel of air just as you do with sand, Diatomaceous Earth or filter cartridges.

  1. How long will FilterBalls last?

FilterBalls to not wear down from the aggressive action of moving water as will sand or zeolite.  Sand and zeolite become smooth just as river stones loose their edges and their capacity to filter. FilterBalls will last as long or longer than sand.