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The operative word there, Gary, is "eventually." That's my whole point - if I'm not running much water through the filter, the filter shouldn't be loading up and I shouldn't have to backwash it so frequently - I should be able to do it "eventually." But, that's not the recommendation. Maybe an...

The universal recommendations for backwashing Filox (aka Catalox) are like doing oil changes: based on time as well as usage. I never understood why I'd have to change the oil in my car every 3 months whether I drove it or not, and similarly I'd like to understand why Filox needs to backwashed...