The following is the 55g plastic drum I use for water changes. The RO/DI feeds into it to fill it up. A Little giant 4 MD pump recircultes the water inside to mix it well. It takes literally 5 min. for everything to mix. A heater sets in the mood. All I ahve to do is turn a couple of valves and it dumps 50g into the sump in front of it.
This is own personal design. I came up with it during one of those late nights at NASA........
