Is 17ppm TDS safe for my reef aquarium?

alfieh0 · Mar 1, 2019

i am new to saltwater and have just bought some rodi water from the fish store to fill up my new tank with. When I bought the bottles home I checked the TDS and it was 17ppm is safe to fill a new aquarium with?

Brad Miller · Mar 1, 2019

Typically shooting for 0 tds
I personally wouldn't use it if that were a true reading.
Are you sure your testing method is calibrated ?
Maybe call the last where you bought it and see if they say what they tested it at

Gregg @ ADP · Mar 1, 2019

Guess it depends what those dissolved solids are. Where is the source water coming from (eg treated tap, well, etc)?

Randy Holmes-Farley · Mar 2, 2019

Yes, it entirely depends on what the 17 ppm TDS is. I personally wouldn't use it, but it may be fine. Even 1000 ppm TDS may be fine, or not.

0 ppm TDS made from drinkable water is a good assurance that it is fine.