WC water shelf life?

[Reefer508]

I mixed up some water change water about a month ago but life got in the way and never got around to doing it. Any thoughts on if I should use or dump the 30 gallons? I have been running a pump in it the whole time.

 

[dz6t]

Test the alk, if it is in range, perfect to use.

 

[Reefer508]

Alk was very low, I dumped it. What would deplete the alk? Bacteria?

 

[dz6t]

Precipitation of calcium carbonate

 

[TPhan]

Which salt are u using and how low was alk?

 

[Reefer508]

Reef crystals, was at 6.5 dKh

 

[dz6t]

Reef crystals, was at 6.5 dKh

That was a goner.
When it got that low alk level, large amounts of calcium and magnesium were gone along with most trace elements.