I have a quick question regarding storage of the salt mix. I'm using instant ocean salt mix which comes in a box with 4 separate bags for a total of 200 gallons of mix, my question is what is the best way to store the remainder of the salt once the bag is opened? I'm not sure, but would a HD bucket with the sealed top be adequate, the cover has an rubber gasket built into it. I need to add some water and raise my salinity a little bit and wont do any thing till i hear from you because i have to open a fresh bag.