Simply stop adding chlorine to your uncovered pool and wait. Sunlight will help to naturally dissipate the chlorine within 10 days. During that time, use a swimming pool test kit to measure chlorine. Chemically dechlorinate the pool water.
Chlorine naturally dissipates into the air and out of your pool water when exposed to sunlight. The process usually takes less than a week. If you plan on using pool water to irrigate your trees, don't add any more chlorine to your pool. After four or five days, test the water.
Floc and Shock – If your pH is around 7.3, it is on the low side. Hence, shock the pool with enough granular chlorine or bleach to attain the proper chlorine level. Test the level of chlorine the next day and continue the shocking process until the pool is clear.
All you need is a medium-size water or vacuum pump. Unroll the pump's intake hose so that it reaches the center of the pool (or as close to it as possible), and submerge it in the pool. Place the outlet hose so the exiting water doesn't flood the area, but drains off away from the pool.
Concrete Pools
Once water is removed (and subsequently, the interior hydrostatic pressure), if there's an influx of groundwater, it will push the pool up and out of place. As a general rule, you shouldn't keep any pool empty for longer than it needs to be.
Poor water quality, due to an overabundance of Total Dissolved Solids or high levels of Cyanuric Acid, is the most common reason for needing to drain a pool. Even with proper and regular pool maintenance, it's often necessary to drain your pool — completely or partially — every 3-5 years.
Use Hydrogen Peroxide
Hydrogen peroxide is a powerful oxidizer and reacts with chlorine to produce water and oxygen. It is working if you notice small, effervescent bubbles in the pool. For the best results, use hydrogen peroxide that is formulated for pools.
Flooding Your Grass Is Not A Good Idea
The problem with draining your pool in the yard, if permitted by your local water regulatory laws, is that it will quickly reach its saturation level and increase the risk of flooding your lawn, drowning the roots of your grass, and attracting mosquitoes.
Most inground fiberglass and concrete pools are built structurally to withstand the weight of the dirt against them when drained. However, if the groundwater is high enough, it can push the entire pool out of the ground. The pool shell acts like a ship and floats up in the groundwater.
Close the pool for winter – but don't drain it.
In winter, the water in your pool is still your friend. Especially when properly winterized, it helps to protect the pool liner, keep it clean and prevent unnecessary damage from debris, harsh weather and other factors.
A concrete pool that “floats” – or pops out of the ground – is an extremely rare event. Most of them occur during major flooding events or hurricanes.
Turn the filter off (or unplug it) and set it to Waste. Shut off your skimmer and open your pool's main drain. Turn your filter on and the water will start to pump through your backwash hose. Allow the water to drain.
The first choice for draining swimming pool water should be to drain pool water into the sanitary sewer. In-ground pools typically have a sanitary sewer drainage inlet near the pool equipment. Pools and spas not plumbed with a sanitary sewer drainage inlet can be drained to a sanitary sewer line plumbed to the home.
A 10,000 gallon pool will take about 14 hours to drain, the maximum rate recommended by the City of Phoenix. It will take twice as long to drain if the pool size is doubled or cut in half.
Screw a hose cap onto the hose's open end while it's still submerged. Lift the end of the hose from the water and drag it to the drainage area. Place the hose close to the drain or cleanout or on the ground. Take off the cap from the end of the hose to begin the siphon.
A common cause of pool collapse is a build up of snow, rainwater, and ice on the pool's cover. The weight of the elements can be too heavy for the pool walls to contain, causing them to fracture and collapse.
First, if the draining is done at the wrong time or under the wrong conditions, you can actually risk damaging your pool structure and liner. All the water from your pool needs to go somewhere when it's drained, and that usually means the ground.
Draining a pool can take up to 14 hours, depending on the size, so be sure to drain it on a day when you have sufficient free time. You need to be home to check on the pool, the hoses, and the pump frequently.
A freshly chlorinated pool should not be discharged into the yard; the chlorine is harmful to yard plants and the environment as a whole. Using a test kit, your pool water needs to reflect a certain concentration of chlorine, such as 0.1 ppm (parts per million), before it is safe to drain into your yard.