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Old 10-15-2009, 03:45 PM   #1
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Evaporation question

hey guys i have a 135 gallon tank and my friend was tellin me that i can add regular water instead of a whole water change how do i do this he didnt reallyy explain him self can anybody help?

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Old 10-15-2009, 03:50 PM   #2
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Any evaporation is replaced with FW because the salt stays in the tank. Any PWC water is SW going out and needs to have SW going back in to replace it.

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Old 10-17-2009, 11:50 PM   #3
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water evaporates the salt does not. You don't need to add salt to water top off
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Old 10-18-2009, 02:07 AM   #4
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I have a piece of tape on the side of my sump that shows me how much water has evaporated from my tank. I now have an Auto topoff and that replaces the evaporated water automaticly.
Happy Reefing,
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