when does a water change become irrelevant

[FishyFishy!]

Does anyone recall the DSR (Dutch synthetic reefing) method? There is a lot of controversy surrounding it, but it does make a lot of sense when you look at it. Simply replacing all elements that diminish over time, and zero water changes. Glenns 300 gallon tank on reef central is outstanding, and he hasn't done a water change for maintenance in years (not to mention he dosn't have a functioning skimmer, and very little equipment other than dosers). A very neat theory, but theres no way that I could keep up with all the testing all the time. I think regular water changes are going to be the key for me.

When I look back at it, all of my successful tanks were those that had regular water changes. All the ones that I neglected to do water changes on, had zero abilities to grow and keep even the simplest of corals.