How to clean a green pool

How to Get Rid of Green Water in a Swimming pool

Is the water in your swimming pool green? Depending on weather conditions it can happen fast - almost overnight. Your water looks fine one day and then you get up the next and there it is ugly, green water. The green color you're seeing is a full-scale algae bloom. Algae are microscopic plant life that get into pools by rain or are carried in by dust. Some of them are free floating while others latch on and cling to the sides of the pool. Either way you can clear up your pool water, so don't despair - in a few days your water will be crystal clear again. Does this Spark an idea?
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Things You'll Need

Pool water chemical test kit
Unstabilized chlorine (Shock)
Pool scrub brush

Instructions

1 What you'll need
Pool water chemical test kit
Unstabilized chlorine
Pool scrub brush

2 Use your test kit to determine the pH level in your pool water. It should be between 7.2 and 7.6. If it is outside of that range add pH Up or pH Down to adjust the level.

3 Scrub the sides and bottom of the pool with the brush to loosen any clinging algae.

4 Add unstabilized Chlorine granules (Shock) to the pool. The amount of Chlorine you add will depend on the capacity of your pool (150 grams for every 10,000 liters or approximately 5 ounces of chlorine for every 2500 gallons of water).

5 Turn on your pump and run your system for a day allowing the Chlorinated water to circulate and get rid of the algae.

6 Vacuum the white residue from the bottom of the pool the next day. The water should have cleared substantially, if it is still looking green repeat the "shock" process.

7 Clean your filter to remove any alga residue.

8 Rebalance your pool water.

Tips & Warnings

Regularly cleaning and vacuuming your pool as well ensuring the water is kept in balance will minimize the chance of your water going green. (pH should be between 7.2 and 7.6 while the free available Chlorine level should be between 1.0 and 3.0 PPM (parts per million).

In periods of hot weather or when you have higher than normal swimmer load, "shocking" your pool every two weeks will keep algae away.

Pool supply stores also sell algaecide you can add to your pool water. These chemicals are usually safe to add at any time (even just before you swim), and they do help control algae

After "shocking" your pool don't swim for at least a day. The high levels of chlorine can cause eye or skin irritation as well as damaging bathing suits.


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