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Good TDS vs. Bad TDS?


mcallahan

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I tested the water in my RO/DI barrel yesterday and it came out @ 4 TDS. I then tested the water straight out of my RO/DI unit and it read 0 multiple times. So I concluded there might be some residue in my barrel.

That being said, I filled my 5 gallon jugs with water (same ones I use to top off my tank and mix salt) and overnight, the TDS in there rose to 14.

So, is there good TDS and bad TDS? I figure the water in my mixing jugs has a TDS of 14 due to residue from the salt mix and buffer solutions, so would you say that TDS is bad, or just a normal part of using jugs to mix water?

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Unless your clean, dry and cover your mixing container when its not in use, you will get some TDS. There are good and bad dissolved solids. Left over salt and a little dust from the air are fine. I wouldn't worry about it.

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Unless your clean, dry and cover your mixing container when its not in use, you will get some TDS. There are good and bad dissolved solids. Left over salt and a little dust from the air are fine. I wouldn't worry about it.

I was figuring that, esp. since I "dope" my top off water with Ca, Mg, Alk solution, Iodine, etc. AT some point, SOMETHING is going to get in the water.

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I have been told that water with 0 tds is so pure that I will attract tds like a magnet. Even the little that is in the moisture in the air. I just gave up trying to keep 0 tds in my top of water and just deal with it

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