I have never seen those python things in australia. I can't belive u guys r filling ur tanks with tap water!!
I fill 3 80l bins every monday and let them sit with small dose of prime.
Then every wed i take out interal sponge filter and clean,throw a hose out the window run downstaris suck and syphon ,run back upstairs, vacum gravel then re-assemble interal filter and fill with water from bins with a bucket!!!!
I live by myself so it really sux!!
I scrub inside of tank when i do this and lids etc
than finaly clean all outside glass
Massive job when its a 6 foot tank!!
But after i am all finished i can sit back and look at a perfectly clear tank and it makes it all worth it