Are water changes needed??

[TangerineSpeedo]

Is flushing your toilet necessary?


Then imagine your fish which live in a glorified toilet [they live and breath in that water]. Why wouldn't you change their water?

Because the breakdown of that toilet water is what is needed to feed your corals.
Or maybe the fish live in a drought sensitive area...
If it is yellow...
Let it mellow...
If it is brown...
Flush it on down...