DE) If you have an accurate scale that will allow you to weigh the container first and then the weight of the DE when it's full, that's fine - just be SURE to know ~ how much DE you add when you are adding it! Turn the multiport to "backwash" and restart the pump, watch the view-glass or the end of the discharge hose to see when the backwashed water becomes ~clear. scoop or canister that is not specifically for DE (ie. Knowing how much DE you are actually adding to the unit is VERY important! The best way is with a premeasured scoop - they are inexpensive and well worth the $ spent, any place that sells DE should have one available.
POOL DE FILTER CLEANING MANUAL
Similarly, too little DE will not catch enough (dirt, etc) and cause the grids to clog up with the debris, both of which require a manual cleaning of the grids and possibly a chemical cleaning of them.Īlso, "bleeding" the air out of the unit before adding DE is KEY! - the fresh DE can only coat the parts of the grids that are in water! However, DE filters, while providing the finest filtration, DO have their downsides! If you do a "backwash" (discussed later) or do a thorough cleaning of the filter, you need to add more DE to it - and, if you add too much or too little, you'll likely have filter problems! Too much DE will clog the filter and decrease the efficiency of it. (having a second, or third, suction source allows the DE rich water from the skimmer to properly mix with "non-DE water" from the other source(s) to evenly coat the grids). When adding DE to a filter, most manufacturers recommend mixing the powder with water before pouring it into the skimmer - I have found that adding the powder directly into the skimmer is equally effective, if you have more than 1 suction source operating at the time of addition. Because of the nature of the "paths" through the DE coating, algae (which is the approximate size of the paths) can easily and quickly congest a DE filter, most DE filter owners find this to be the biggest drawback of owning one.ĭE must be added to the filter via the skimmer, with the pump running, the amount to add is dependent upon the size of the filter. The DE is kept in the water flow of the filter because it coats the internal grids or fingers which make up the filters internal "nets" allowing dirt and debris to be captured by the microscopic paths created by the coating. NOTE: Do not use food-grade DE as it is different than the DE used for pool filtration
The DE is a white powder which is mined in various places around the world which was formed by the evaporation of the water that these diatom critters lived in.ĭE filters capture particles down to 2-6 microns. DE is the fossilized shell like structure of prehistoric diatoms which is a type of single celled algae. 6.9 Inspect New Filter Grids Before InstallationĪ DE filter or diatomaceous earth filter is one which uses diatomaceous earth to remove all but the finest material from the water.6.6 Stiffening of the fabric - liming up.6.4 Concentration of TSP (dishwasher detergent).6.3 No RINSE position on on a Hayward D.E.7220 MPV.6.2 Adding DE to a Filter if Skimmer is Inoperative.
POOL DE FILTER CLEANING HOW TO
6.1 How to determine the amount of DE required.5.9 Pentair Highflow Manual Air Relief Valve Leaking.5.4 To chemically clean the grids/ nest.5.3 When bumping/ backwashing doesn't work.
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