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DE Pool Filters: Why They’re Still Best for Water Clarity

The pool water was so clear it looked empty—you could read the manufacturer’s stamp on the main drain from 9 feet above. The secret? A properly maintained DE filter. After 10 years installing every type of pool filter, I can tell you that diatomaceous earth filters remain the gold standard for water clarity. Yes, they require more attention than cartridge or sand filters, but if you want water that literally sparkles, nothing else comes close. Here’s the truth about DE filters, including the cons nobody mentions and how to handle them.