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- Feb 27, 2014
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I am using a marine Depot stage 4 filter system. I just went to go run some water for a water change and my tds have gone into the hundreds.
But my question Why is the in tds lower than the out? These pictures are after letting in run for a few minutes but when I initially turned it on I had 400+ tds
But my question Why is the in tds lower than the out? These pictures are after letting in run for a few minutes but when I initially turned it on I had 400+ tds