I switched to chloramine blocks from carbon blocks. Edmonton uses chloramine to treat there water not chlorine. From what I understand carbon removes chlorine and not chloramine. I only switched about a year ago.
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
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