Pool water chemistry involves maintaining proper levels of chlorine (1-3ppm based on CYA), pH (7.4-7.6), alkalinity (60-120ppm), and calcium hardness (250-350ppm for plaster). Regular testing with quality kits and proper chemical dosing ensures safe, clear water.
The SLAM method (Shock Level And Maintain) clears green pools by maintaining high chlorine levels continuously until water clears. Use liquid chlorine to reach shock level based on CYA, maintain 24/7 until overnight chlorine loss is 1ppm or less.
Wait 24-48 hours after shocking your pool before adding algaecide, allowing chlorine levels to drop below 5 ppm. Test your water first to ensure proper chemical balance and maximum algaecide effectiveness.
Yes, most pool owners need pH Up and pH Down chemicals to maintain the ideal pH range of 7.4-7.6, but you may not need both products depending on your water's natural tendencies.
To raise pool pH, add sodium carbonate (soda ash) for quick increases or sodium bicarbonate (baking soda) for gradual increases. Test first, calculate dosage based on pool size, and add chemicals slowly with circulation running.
You can vacuum your pool after adding most chemicals, but timing matters. Wait 15-30 minutes for liquid chemicals to circulate, and 2-4 hours for granular chemicals to fully dissolve before vacuuming.
Yes, you can shock your pool after adding alkalinity, but wait 4-6 hours first and test your water to ensure pH is below 7.6 for maximum chlorine effectiveness.
Yes, you can shock your pool two days in a row if your chlorine levels haven't reached the proper shock level or if you're treating algae. However, test your water first to avoid over-chlorination.
You can shock a pool with high pH, but it reduces chlorine effectiveness significantly. Lower pH to 7.2-7.4 first for optimal shock treatment, or use 25-50% more chlorine if shocking immediately is necessary.
To lower pool pH, add muriatic acid (liquid) or sodium bisulfate (dry acid) to your pool water. Use 1 quart of muriatic acid per 10,000 gallons to lower pH by 0.2 units, testing and adjusting gradually.
Yes, above ground pools absolutely need a liner to hold water and protect the pool structure. The liner creates a waterproof barrier and should be replaced every 5-9 years depending on usage and maintenance.
Yes, you can shock your pool after adding algaecide, but timing matters. Wait at least 2-4 hours between applications and always add algaecide first, then shock.
You can shock your pool during the day, but it's less effective due to UV rays breaking down chlorine. Evening shocking after sunset provides better results and longer-lasting sanitization.
Most pool chemicals take 2-8 hours to fully circulate and settle, depending on the type of chemical and your pump runtime. Always wait before retesting water levels.
To raise pool stabilizer levels, add cyanuric acid at 1.3 pounds per 10,000 gallons to increase CYA by 10 ppm. Use granular stabilizer in a sock method or liquid stabilizer for faster results.
