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1. There might be metals in the water

If your pool has metals like copper in the water, it can turn green immediately after shocking. These metals oxidize when exposed to high levels of chlorine, resulting in green pool water. To restore your pool water, you can use a metal control product, such as Zodiac Metal Remover. Just remember to bypass the pool heater if you have one when shocking the pool with chlorine.

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2. You used copper-based algaecides

Using excessive amounts of copper-based algaecides can increase the copper levels in your pool, leading to green pool water. To prevent this, opt for a metal-free algaecide instead.

3. Your CYA (Cyanuric Acid) or pH level is out of whack

Cyanuric Acid, also known as CYA, acts as a chlorine stabilizer, protecting it from the sun's UV rays. If the CYA level is too low, the chlorine becomes less effective. Before adding pool shock, ensure that your CYA level is between 30-50 ppm. Additionally, high levels of Cyanuric Acid can hinder chlorine's ability to kill bacteria. Similarly, the pH level of your pool affects the efficacy of chlorine. To optimize the effectiveness of chlorine, adjust the pH level to 7.2-7.6 before shocking your pool.

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4. Phosphates in the water

An excess of phosphates can provide additional food for algae, leading to a green pool. If you suspect high phosphate levels, have your pool water tested at a local pool store or use a phosphate test kit. To prevent algae from recurring, use Phosphate Remover according to the recommended dosage.

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5. You didn't use Flocculants or Clarifiers

If your pool is still cloudy even after shocking, you may need to add a clarifier or flocculant the next day. Flocculants cause small particle impurities to clump together and settle at the bottom of the pool, requiring manual vacuuming. Clarifiers, on the other hand, restore shine to slightly cloudy water and are removed by the filtration system.

Now, how can you prevent your pool from turning green or cloudy again?

The answer is simple - keep your pool clean and chemically balanced. Test your water at least once a week and add sanitizers if chlorine levels are low. Remember, preventing algae is far easier than removing it. Consider adding Pool Algaecide or Supreme Algaecide monthly during regular maintenance. And of course, it's always a good idea to consult a Zodiac Pool Professional for expert advice before adding any treatment to your pool or spa.

So, stay on top of your pool's maintenance, and enjoy crystal clear water all summer long!

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