Mattyou's speed clean method..
Start a gravity syphon by shoving your Lees or equivalent syphon down the neck of a cut off garden hose, throw the hose out the door into the yard.
With a faucet adapter and a python with a return directional sprayer on it (like you would use for a wet/dry return) instead of the syphon get the water running at the temp you want into the tank.
Clean and refill at the same time withoput ever shutting off the filters. My tap water quality is very good so chemicals are not a problem, once finished I treat the whole tank volume with de-chlor of choice.
I have done it this way for 20+ years and never killed fish from this method. In Florida where the city water was crappy, I had to be fast, but here in Southern MD where the water is ALOT better, I can take all the time I want. Since this method is so easy I am more likely to do much more frequent water changes than if I had to do it differently. I have multiple tanks to clean and I can do all in a few hours with this method. Tanks are 180 / 150 / 125 / 110 / 90 / 2x75 / 70 / 2x60 / 58 / 4x55 and the odd 20 gal grow-out tanks number always changing.
Best of luck.