Curtis Scott April 18, 2015 Share April 18, 2015 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? Link to comment Share on other sites More sharing options...
zygote2k April 18, 2015 Share April 18, 2015 perfectly ok Link to comment Share on other sites More sharing options...
DuffyGeos April 18, 2015 Share April 18, 2015 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? Link to comment Share on other sites More sharing options...
Curtis Scott April 18, 2015 Author Share April 18, 2015 Thanks Rob Link to comment Share on other sites More sharing options...
smallreef April 18, 2015 Share April 18, 2015 Ive used mine up to 4 weeks after mixing... Only ever do a 20% change so it's not alot of water... Link to comment Share on other sites More sharing options...
Apcoleman April 18, 2015 Share April 18, 2015 Use it. All my tank is is mixed up salt water Link to comment Share on other sites More sharing options...
sam75 April 23, 2015 Share April 23, 2015 Mines been mixing in my tank for about 10 years now. Hasn't gone bad yet... :p Link to comment Share on other sites More sharing options...
Coral Hind April 23, 2015 Share April 23, 2015 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. Link to comment Share on other sites More sharing options...
sen5241b April 23, 2015 Share April 23, 2015 I once had mix up water sit for a week and take on a green tint. I tossed it. Link to comment Share on other sites More sharing options...
YHSublime April 24, 2015 Share April 24, 2015 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. Link to comment Share on other sites More sharing options...
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