I was using 5 gallon buckets to bring the RO home and then adding the salt for my nano tank. The buckets became heavy for me to lift so I purchased a pump. Recently I purchased a larger tank and it included 2 brut gray 20 gallon trashcans with the wheels! I change 10 gallons once a month so I bring home 2 -5 gallon buckets from the LFS..and when I am ready to use I add the salt, heater amd a power head atleast 3 days in advance to get the salt nice and dissolved..I found that if I pour the RO water in the trashcans, it slowly evaporates. With the rubber sealed 5 gallon bucket lids that doesn't happen. Also, one trash can is for the new water and the other I use when I pump the water out of the tank.. Hope this helps!