TDS meter just read 29 ppm, dump it or use it?

[Guest vatbrew]

I'm putting together a batch of water for a W/C and it read 29ppm on my TDS meter. Is this acceptable for a 15% water change or should I dump it?

[madmax7774]

depends on how desperate you are. If you are doing a WC to save your system then use it, if you are just doing a routine wc, then get better water. Thats what I would do...

 

 

 

[Guest vatbrew]

Just routine. Lemme ask another question. I just tested the water coming out of my unit and it tested 2ppm. I never use all of the water thats in my tub, I just grab top off and more water is made. I decided to empty the tub with this water change. Can RO/DI water go "bad" sitting unused for a while?