Well, having a 55 gallon saltwater tank I keep 2 seperate sotrage bins for my water.
I have a 55 gallon rubbermaid trash can that I bought to keep my RO/DI filtered water in. (Black container shown) I keep a 35 gallon rubbermaid latch tote storage bin (Blue container) where I mix my saltwater for my water changes.
I use 5 gallon buckets to haul water (seperate buckets for each) and I either siphon the water outside, or into another 5 gallon bucket dedicated to waste water.
I simply reuse the buckets my salt mix comes in so having enough buckets is never a problem.
