rfdoc
New member
I plan to mix synthetic saltwater and then store it for a week before I use it in my tank. Is it ok to store this in a jug with a cap on it (such as a milk jug) or does it need to be exposed to air such as in a large bucket or trashcan for gas exchange to occur? Probably a stupid question but I haven't seen any advice about this other than people mixing saltwater in trash cans.