I just did this two days ago....and it's the third time I've done it since I started keeping fish. At this point I figure I need a little sign on the back of the tank reminding me to unplug it during water changes.
Glad your fish are okay. Nice to know others do this too.
joy to the fishes in the deep blue sea
55, 30, 30, 20, 10, and 10-gal. freshwater tropical tanks