DIY 101: How to Clean a Pool Like a Pro

In-ground pool cleaning can be challenging, especially when opening it for the season. Don’t worry if you uncover your pool and find green water—it’s a common issue caused by algae buildup. Here’s how to clean the in-ground pool thoroughly:

Step 1: Open Your Pool Cover

• Remove the pool cover carefully to avoid dumping debris into the water.
• If your pool water is green, it’s likely due to algae. Don’t panic—this can be resolved.

Step 2: Add a Flocculant to Clear Algae

• Wondering how to get dirt out of pool? Use a pool flocculant (commonly called “pool floc” or “flocculant powder”) to bind the algae and other floating debris, causing them to sink to the bottom of the pool.
• Make sure to follow the product instructions to add the correct amount based on your pool size.

Step 3: Skim the Surface

• While waiting for the flocculant to work (usually a few hours or overnight), skim the surface to remove large debris like leaves and twigs.

Step 4: Vacuum the Pool Floor

• Once the algae and dirt settle to the bottom, use a manual vacuum to remove the debris carefully.
• Avoid using an automatic vacuum at this stage, as it may stir up the sediment.

Step 5: Brush the Walls and Steps

• Use a pool brush to scrub all surfaces, including walls, steps, and corners, to remove any remaining algae or dirt.
• Alternatively, you can use a robotic vacuum cleaner, which not only vacuums the bottom of the pool but also brushes the walls for you. This saves time and ensures a thorough clean, especially for small debris.

Step 6: Shock the Pool

• Add a pool shock treatment to sanitize the water and kill any remaining algae. Use a chlorine or non-chlorine shock based on your pool’s chemical balance.
• Allow the pool pump to circulate the water for 8–12 hours to evenly distribute the chemicals.
• Pro Tip: Always shock your pool at night! If you do it during the day, the sun’s UV rays can break down the chlorine before it has time to work effectively.

Step 7: Test and Balance Water Chemistry

• Use a pool test kit to check chlorine, pH, alkalinity, and other chemical levels.
• Adjust as needed with chlorine, pH balancers, or other chemicals to bring the water back to optimal levels.

Check DIY101: A Beginner’s Guide to Safely Testing Pool Chemicals for more detailed step-by-step guides on how to test and apply pool chemicals by yourself!

Step 8: Run the Filter System

• Clean your pool filter and run it for several hours to remove any remaining particles. Backwash the filter if necessary to maintain efficiency.

Pro Tips for Pool Algae Prevention

• Use an algaecide regularly, especially during warm months when algae thrive.
• Keep your pool covered when not in use to minimize sunlight exposure and debris accumulation.
• Test water chemistry weekly to maintain proper balance and prevent algae growth.

By following these steps, you can restore your pool to its sparkling blue condition and keep it ready for the season ahead.