What I normally do is mix my water the day before I am going to do a water change. Make sure that the ph
, and all the other stuff is right, and then just leave it for the night.
Then I clean the glass and the return line to the tank, this puts stuff into the water as well as filter, that I am going to change anyway the next day.
When I get to the water change I start by siphoning out 2 five gallon buckets worth of water, making certain to clean the substrate and areas where alot of stuff gathers. Then I take the filters out of wet dry and rinse them good in the tank water. I tend to replace the prefilter about every 2-3rd time.
Then I take the salt water from the night before and add it back into the tank. There are alot of ways to do this, I choose to siphon it into the sump and let the pump push it back into the tank, mostly cause it is easier then any other way I have tried.
Finally I will do any other tank maintence that needs to be done and clean the glass and check therm and skimmer.
All in all it takes me about an hour or so, and I change 10 gallons every 3-4 weeks in a 72 gallon tank.
I am sure others do things different, but with my hectic schedule this works the best for me.