media guard kdf 55 good or bad?

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ditttohead

Water systems designer, R&D
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I highly recommend whole house carbon. Considering the number of organic chemicals GAC can remove. It is inexpensive, and in a backwashing application, the small amounts of chlorine keep the system relatively clean. All water will have some form of bio growth. Replacing the carbon every few years will keep everything just fine. It sounds like the city supply had a major malfunction and that would suggest that your filtration medias should be replaced, and the equipment should be properly sanitized during the media replacement.

As to the KDF, it is a common problem for companies and DIY types to not adjust the BLFC to a proper rate accounting for water temperature. In general, the DLFC must be between 4 and 5 GPM regardless of tank size. you are adjusting the backwash for the media guard, not for the resin. if the DLFC is correct, the KDF can last for many years. The media guard is fairly fragile, but when seviced correctly, it is fairly easy to replace.
 
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