As melosu says....there's a ton of ways folks do water changes. I guess whatever works for you is the best. For example....I mix my water up in a plastic garbage can (15 gallons for each pwc
) that is about 10 feet away from my tank. Throw in the ro
water, salt, heater and power head into the garbage can. The next day I do my testing and check the temp and if everything is ok, I start the water change. I get a 5 gallon bucket and take my power head and plastic tubing and put it in my sump. (I do 5 gallons at a time) The powerhead pumps the water into the 5 gallon 'waste' container (from my sump). I do this 3 more times. I then switch the powerhead over to the 'new' water (plastic garbage can) and let the powerhead pump it into the sump.
Hopefully that wasn't too confusing. I'd be interested in seeing how other folks do theirs.....perhaps I can trim off a few minutes.