The following article covers pool water conversion from pools using Baquacil and that would like to convert to using regular chlorine. The best time to complete this process is when there is the least amount of Baquacil chemicals in the pool, generally in the spring when prepping your swimming pool for the upcoming season.
You may find after reading through this process that it is easier to simply change you water entirely since above ground pools typically have a lesser amount of water as compared to inground pools.
Draining Your Above Ground Pool
To properly drain your above ground pool please follow these tips
Convert Your Pool From Baquacil to Chlorine
Discontinue using all Baquacil products.

Completely clean your filter. If you have a sand filter, change your sand. If you have a cartridge filter, purchase a new cartridge. If you have a D.E. filter, soak and clean the fingers in a cleaning solution.

Test and adjust pH and Alkalinity.

Is a three way test kit tests for chlorine, pH and alkalinity levels. Proper levels keep your pool sparkling clear. One bottle contains 50 Strips.
Shock your pool with Non-Chlorine Shock or OxyShock. Use double the amount of shock as normal. For every 5,000 gallons, use 2 lbs. of OxyShock.

Focus Multi Purpose Shock is a highly effective sanitizer that kills harmful bacteria, aids in algae control and helps keep your above ground pool clean and clear.
Turn pool filter system on and continuously run for 2 days.

After 2 days, test and re-adjust pH to neutral levels.

Add chlorine in small amounts. Add chlorine in small amounts and take note of the pool water for any changes in color. Once a chlorine reading of at least 1 ppm is obtained, continue to add chlorine on a day-to-day basis until you reach 3 ppm.

Focus Granules are powerful, stabilized fast dissolving powder chlorine. It is completely soluble and keeps your pool water clean and safe. Di-Chlor Granules are the perfect choice for producing crystal clear swimming pool water.
Continue regular chlorine maintenance schedule.
