The best thing to do is get a TDS meter and check it occasionally. When the TDS starts to come up, its time to change the filter.
Gary
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The best thing to do is get a TDS meter and check it occasionally. When the TDS starts to come up, its time to change the filter.
Gary
Gary
125 SPS, 75 gal. LPS/softie reef, 9 gal. Nano
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