"Very Disappointed" - Review of MSR HyperFlow Microfilter

This filter did NOT live up to expectations. The float end wouldn't stay face down in the water. Even worse, the filter cartridge clogged very easily when the water wasn't perfectly clear (e.g., when there's any presence of algae). The only way to backflush was to waste up to 1 liter of water for every 8 liters you pump -- you can't clean the filter directly like other MSR ceramic filters. Definitely not worth the extra money. Go with a proven and cheaper MSR pump instead (such as the Miniworks EX).
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