Cleaning larger tanks?

[ScuitoAmi150]

This may sound stupid but I want to know how you all clean your bigger tanks. I had my turtle in a 20g and I couldn't pick it up and dump it. Especially not when it had water in it!!! It was such a pain; I tried one of those long tubes that you hold under water until all the air is out and it suctions the water out, but that was also a pain.

So how do you all do 100% water change?

[ChristinaRoss]

with a larger tank, if its cycled, you dont ever dump all the water out. you use a gravel vac and clean the gravel and remove typically 20% of the water, then replace it.

to me its easier than the smaller tanks

[ScuitoAmi150]

I don't know much about cycling....I wish I had known that with my turtle tank.