new salt mix good to use?

[gqlmao]

I have found that water left stagnant for a few weeks usually builds up a slime coat on the container it is held in. If it smells funny cause its been lacking air and usually stagnant water left for a long time is bad. If it smells funny don't risk it.

[jason604]

I think it smells funny cuz I left the lid on the can n mybe ur right with the lack of air thing. I guess ill just dump it n make new or just 50% with 50% new iono

[jason604]

yup, took off the lid overnight and all the smell is gone! Will use it all tmr

[e46er]

I usually mix water up right away after a WC(do them every 2 weeks) and just keep a power head going in it those korilia powerheads only draw like 10 watts so it's nothing and just throw a heater in the night before you plan a WC and that way you don't have to worry about smell or anything

[banditpowdercoat]

I have had water mixed for a month and all is good. In rubbermade buckets. Just circulate for a few hrs before changing. I always make up 15g of change water before I go to camp for 3 weeks. Incase something happens. Then when I come home, I do a WC with it, and make a new batch. Usually its made for 6wks as I do a 15g change 1 every 6 weeks when Im home. Mind you, I am a FOWLR tank basically.