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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.
4

This is a normal water change.
1

Friday during the day, my DOS starting running backwards. (Left is the normal water change, right is when it started running backwards)
2

Today it's still running backwards and did not resume my nightly water change.
3

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


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