All Delphina pools come with a pump that will remove the water from your pool using a standard garden hose. It will typically take 4 hours to drain the pool. Superior Pump manual here. Aqua Strong manual here. It will drain down to about 1/4" of water so you might need to scoop out the remaining bit with a bucket. Important: Remove the chlorine dispenser from the inside. If you leave it in, it can remove coloring. Important: Turn off your pool pump to prevent it from running without water. Ideally, let the vinyl liner dry for about a day. Then, use Vinyl Cleaner to scrub the sides before filling it back up. As you fill up the pool again, get inside and kick out the liner to ensure there aren't folds or kinks in the bottom of the pool. Stay inside the pool for the first 3 inches. Additionally, as the pool fills back up, ensure the pool legs are kicked out and on the cement blocks or steel bases as it fills back up. You might have to use a long tool (e.g. broom) or unscrew and remove the wrap to do this.