OK I backflush regularly. The instructions recommended backflushing every few months for 30 minutes. The directions stated that it would "greatly" extend the life of the filter. In this case I won't 2nd guess the manufacturer. I have regularly let it flush overnight. It runs my auto top off, so it is never off line. It is over 2 years old, has made thousands and thousands of gallons and still drops me from 3 to 400 ppm to 4-8. I really have a hard time believing that the RO is letting bacteria through. They are much larger than the filter.
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300 Reef; 325LR, 1/2" sand bed in tank, 3" sand bed in 215 gal sump/refugium and Berliner PowerPro SS twin becket skimmer. 210 Reef; with 225 lbs of LR, 300 lb DSB, Large W/D and Jebo 520 skimmer modified to accept a becket. 90 RR FOWLR; tied into the 300's sump with a closed loop for extra circulation. 55 hospital. |