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Old 06-19-2013, 03:20 PM   #11
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Many systems here use a automatic system that adds fresh water to counteract evaporation.
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Old 06-19-2013, 03:21 PM   #12
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Just reading this thread. What's an auto top up of water?
It's a monitor and pump that will automatically add RO/DI water to your tank to prevent salinity swings. Tunze Osmolator Universal 3155 Auto Top Off - Bulk Reef Supply is the best out there.
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Old 06-19-2013, 03:21 PM   #13
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Straight from and ro unit?
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Old 06-19-2013, 03:23 PM   #14
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Yes. When the water evaporates, the salt stays, increasing the salinity. You need to add straight RO water to counteract that.
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Old 06-19-2013, 03:23 PM   #15
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An auto top off is a reservoir of RODI water hooked up to a float switch and a pump. When the water in the return section of the sump gets to a certain point it automatically adds water to your tank.
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Old 06-19-2013, 03:24 PM   #16
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Sorry does water go through the auto top off from the tap or does it need to go via ro unit
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Old 06-19-2013, 03:24 PM   #17
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Straight from and ro unit?
It can be, or from a freshwater storage container.
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Old 06-19-2013, 03:25 PM   #18
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Sorry does water go through the auto top off from the tap or does it need to go via ro unit
No tap water. Ever if you can help it.
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Old 06-19-2013, 03:25 PM   #19
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An auto top off is a reservoir of RODI water hooked up to a float switch and a pump. When the water in the return section of the sump gets to a certain point it automatically adds water to your tank.
Cool stuff
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Old 06-19-2013, 03:25 PM   #20
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Sorry does water go through the auto top off from the tap or does it need to go via ro unit
Add RO water, not tap water.
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