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Old 01/12/2020, 01:54 PM   #1
Roy G. Biv
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Join Date: Jan 2007
Location: New Jersey
Posts: 3,646
DOS running backwards?

This is my normal program. After midnight.

This is a normal water change.

Friday during the day, my DOS starting running backwards. (Left is the normal water change, right is when it started running backwards)

Today it's still running backwards and did not resume my nightly water change.

What in the world would tell these pumps to run backwards at random times?

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