"Gregory_Asr" wrote in message
om...
"luminos" wrote in message
I have an uneasy feeling that by 'clean' you mean to tear down the
environment completely and clean it out. Cleaning is a bad idea, if
that is
what is meant!

Should I ever scrub and fully clean the inside of the bowl? I'm now
aware of the weekly water changes but, in the case of a 2 gallon drum
bowl, when should I to do a complete water change?

IMO, absolutely never. And never, ever completely remove gravel and
sanitize it.

There are important bacteria in established water and gravel. Even a Betta
appreciates a cycled environment.