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Step 1 Preliminary Inspections: Prior to precoating the filter, visually inspect the filter elements. This is particularly important at springtime start-up and also should be done occasionally during the season. Torn or improperly fitted filter elements or fabrics can cause problems and should be corrected prior to the next step. Also, the filter elements and fabric should be checked for cleanliness. Dirty or clogged filter elements will reduce the flow of water through the filter as well as cause short cycles. Step 2 Precoat: This procedure is used to "coat" or "cake" the filter elements with a thin layer of diatomite. Thoroughly mix the proper amount of Celatom into a pail of water, forming a slury, then feed it into the filter via addition to the pool skimmer. Filter manufacturers instructions may containn more details, so we recommend you follow the recommendations of your filter manufacturer. Use one lb. of celatom for every 10 sq. ft. of filter area. (A 1 lb. coffee can holds approximately 1/2 lb. of celatom diatomite.) This quantity of diatomite is sufficient to cover the filter elements and trap the dirt solids present in the pool water Step 3 Filtration: Following the precoat step, the water from the pool is pumped through the filter and the actual filtration step begins. The length of the filtration cycle will vary depending on the amount of dirt and solids that have been removed from the pool water. IF you notice an abnormal increase of dirt or debris in the pool from weather or an increased number of swimmers, you can add a small amount of Celatom into the skimmer to help prevent pressure increase. Step 4 Backwashing & Cleaning: Back washing the diatomite filter involves reversing the water flow and/or hand rinsing the filter elements. Repeat this procedure until the waste water runs clear. Proper maintenance and a thorough cleaning of your filter are necessary for obtaining good filtration results. Consult your filter manufacturers operating instructions for complete backwashing and cleaning procedures. If you have a filter system that allows you to recover the used diatomite, simply mix the used diatomite into your garden soil as it will promote root growth and absorb water that will be release to your plants when they need it.
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