Ive seen countless systems with ultra clear water not running ozone.
I think a problem people have is their sump set up. mirco bubbles will ruin water clearity.
But if the water is tainted in color then use a good activated carbon.
I think UV bulbs are supposed to be changed every 6-9 mths.
Socks will help catch loose floating particles but DONT just let them sit there for weeks with out proper cleaning because they will raise your nitrates.
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