My (well, the family's) first tank was a 10 gallon with goldfish.
My mom would net the fish and put it in a bowl, get a bucket, empty the water out of the tank with a cup, carry the tank over to the sink, and wash everything out really well with soap and hot water. The tank had a hob heater and an air driven corner filter. She would replace the carbon and filter floss. This happened once every two weeks. Then she'd put the tank back on the entertainment center, fill it up, plug the heater and air pump in, throw in some kind of water conditioner tablet, and plop the goldfish back in the water.
I relate this to you because for the longest time I couldn't figure out how people with "big" tanks, like 55 gallons, cleaned them. I thought they must haul them into the bathtub every other week and clean them out there. All I thought was how much it must have sucked to do that, how heavy the tanks must be, and how it couldn't be worth it.
Then, when I was about 12, I was a fish store when the owner was cleaning the tanks. That was the first time I'd ever seen a siphon hose. I thought it was amazing, no buckets (she had the hose drain into the basement of the shop, into a sink), no carrying a tank to the sink (or bathtub!), and the gravel got cleaned at the same time!
Suddenly I finally understood how all those "big" tanks were getting cleaned, and was a lot less work then my Mom's way of cleaning tanks.
The rest is history!