Thanks to gravity, siphoning out the water is easy
I'm getting tired of using a 1 gallon jug to add the newly mixed water back into the tank, though. Can anyone recommend a good pump that can sit in the bottom of my mixing container (a 20 gallon Brute), which can pump back up and into my tank? I don't have a sump on this tank, so there's about 5 feet of head pressure. The Marineland MaxiJet 1200 looks like it could be up to the task, and at less than $30, I'm ok with trying it.