In addition to my auto drip system and weekly gravel vacs, about once a month, I do a 75% water change. Its actually pretty easy, I take the mag7 pump I use for the auto water drip system and put in the tank to drain about 500 gallons of water. Then I take my python water changing hose to fill from my garage sink at around 78 degrees. Lastly, I add seachem safe to the tank to remove chloramine.
Here is a picture of the water filling up .note my daughter in the background giving our parrots a bath
Here is a picture of the water filling up .note my daughter in the background giving our parrots a bath