hey, just occured to me although ive gone from large tanks to small to large ect overtime ive had a tank in my home since i was 16... and befor that i had a tank or two in my room on and off... an when i was very young we had a community tank and a single oscar in stacked 4ft tanks in the lounge... ive been running tanks for 13 years now, im 29, thats alot of water changes athough they were alot less frequent when i was in my teens lol! as ive got older and more responsible my tank maintanence has i guess!-)