When making rodi water I always get 0 tds. Last night I got bored and thought wonder what would happen if I added API declorinater to some rodi water? So I put one drop into one gal. and measured the tds and it showed 58 tds! So I guess my question is what would make the tds go up so high? I never use this in my salt water, thank goodness, but I do use in my freshwater tanks. Hey I always get weird thoughts LOL.
API water conditioner
- Thread starter Sabbath22
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Water conditioner is a chemical called sodium thiosulfate, which binds chlorine and removes it from tap water. When you added the water conditioner to the rodi water, it disassociated into a sodium ion and a thiosulfate ion. Therefore, you essentially increased the amount of ions (dissolved solids) in the water. You observed this as a higher reading on your tds meter.
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The Opinionated Reefer
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Would this have any negative effects on a reef tank? I don't trust my ro-di unit to totally remove Chlomarates.
LxHowler
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Do you have a tds meter to test your ro di water after making it?
The Opinionated Reefer
Well-Known Member
Yes ofcourse but what I am talking about does not show up on a tds meter.
LxHowler
Active Member
Sorry my bad I didn't read your post properly
Randy Holmes-Farley
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My Tank Thread
Instead of adding a water treatment, I suggest getting a cheap chlorine kit to see if there is any concern. IME, such concerns are overblown by sellers of specialized RO/DI filters.
