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Old 09-28-2021, 08:38 AM   #1
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Adding salt to top off water?

Hi,
another rookie question here......I'm aware new salt must be added with water changes...........because you're removing some in the process.

but does salt have to be added to the top off jug below? I was thinking the salt
in the tank remains when evaporation occurs meaning the make up water should not have salt.....just pure RO water.....is this correct?

I read some where about someone either doing it or recommending salt here in their makeup water tank .....it stuck in my mind to ask...... I thought I'd better ask people that know! 👌

Thanks in advance!!

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Old 09-28-2021, 09:59 AM   #2
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Im not a salt water person, but in case nobody with more knowledge than me jumps in, my understanding is you dont add salt to make up water for the very reason you mention. The salt gets left behind when the water evaporates.

Could be wildly wrong though when it comes to saltwater. Could be wildly wrong on literally everything actually.
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Old 09-28-2021, 10:14 AM   #3
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No just top off with ro/di, the salt stays behind in the tank.
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Old 09-28-2021, 12:21 PM   #4
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The point of topping off with freshwater is so the salinity doesnt rise as water evaporates. Is salt left as water evaporated there wouldnt really be a need for topping off other than to keep the water level.
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Old 10-14-2021, 11:03 AM   #5
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Quote:
Originally Posted by Aiken Drum View Post
Im not a salt water person, but in case nobody with more knowledge than me jumps in, my understanding is you dont add salt to make up water for the very reason you mention. The salt gets left behind when the water evaporates.

Could be wildly wrong though when it comes to saltwater. Could be wildly wrong on literally everything actually.
Just to ease your mind, YES, only the H and O evaporates, not the salts so you only top off with fresh water/RO water.
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Old 10-14-2021, 07:54 PM   #6
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Thanks for setting us straight Andy.
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