Split by moderator from the DE Filter Cleaning Tutorial to keep the Sticky clean. jblizzle
I did a cost-benefit analysis to tell me when to backwash/clean my filter, but this can only be done if one has a variable speed motor which displays the running wattage being used. Given my electrical costs per kilowatt hour from my monthly bill, knowing that with a clean filter my motor runs at about 300 watts per hour, and that DE costs about $5.00 each time, I calculated that it was cost-effective to backwash/clean my filter when the motor speed increased to 344 watts per hour. If I waited longer than this, the excess monthly electrical costs would exceed the cost of the DE.