Save when you buy more! Get 20% off a 3 pack of First Time Fill Filters. Works great with a great value! Obtain the most desirable crystal clear and clean water with the use of a Clean Swim First Time Fill Filter. Well water or tap water if left unfiltered is unfit for your pool or spa. Clean Swim filters will prevent contaminants from entering your pool in the first place! Use this product when you first fill your back yard pool, swim/spa, hot tub, spa, kiddie pools or anywhere else your family will play and swim. Installing a Clean Swim First Time Fill Filter is as easy as sliding it over your filling hose or spout and tying it on - just like a shoe. Filters are reusable and are great for frequent water replacement. 100% effective for the Endless Pool™! Our product is made in the USA.

• Water filtration is the removal of contaminant particles in a body of H20. The type of filter necessary for a specific application is usually determined by the size of the particulate matter to be removed. Contaminant particles are measured using what is called the "micron" unit of measurement.
• The micron is defined as a metric unit of measurement. One micron is equivalent to one one-thousandth of a millimeter [1 micron (1µ) = 1/1000 mm] or 1 micron (micrometer) = 1/1,000,000 of a meter.
• Clean Swim filtration products use medical and pharmaceutical grade material constructed with pores no wider than one micron.

Upon initial operation a sudden discoloration of the filter from pure white to black/brown will occur. This signifies that the Clean Swim Filter has begun to rid your water of undesirable debris and contaminants.Water will flow freely out of the filter. You will immediately begin to experience the crystal clear water that Clean Swim Filters will provide.