Saltwater mixed for over 2 weeks, still good to use?

[Curtis Scott]

I usually try to use it within a week. Wasn't able to do a WC last weekend and it been mixing for over a couple weeks.

 

Would you guys recommend creating a new batch, or is ok to use?

[zygote2k]

perfectly ok

[DuffyGeos]

perfectly ok

 

Rob- how long do you think it is good?

 

I would think if it has not evaporated and the salinity has changed (just add more RO/DI water), and nothing is using the calcium, alk, mag and other trace elements it would be good for  months? a year?

[Curtis Scott]

Thanks Rob

[smallreef]

Ive used mine up to 4 weeks after mixing... Only ever do a 20% change so it's not alot of water...

[Apcoleman]

Use it. All my tank is is mixed up salt water

[sam75]

Mines been mixing in my tank for about 10 years now. Hasn't gone bad yet... :p

[Coral Hind]

It is fine to use, just re-check SG as it might have gone up from evaporation. If you see a white film in the bottom then check alk/calcium as they might have precipitated out.

[sen5241b]

I once had mix up water sit for a week and take on a green tint. I tossed it.

[YHSublime]

Like CoralHind said, I just check the salinity and roll. I've kept water for about 2 months and used it, sealed in a 5 gallon bucket.