When doing water changes do you...

[Eb0la11]

I was wondering when everyone is doing their water changes, what strategies do they use? Do you just stick a hose in, start the siphon and suck from the middle of the water column, or do many/any of you focus on debris areas?

I ask this because I have done FW fish keeping for 4 years or so and whenever you do water changes you focus on the debris on top of the sand or in the gravel.

This seems different to me in SW fish keeping since there are so many organisms that break down the waste that it builds up a lot less.

Should I be focusing on the debris really at all?