How to Get Rid of Green Algae in a Swimming Pool Caused by Equipment Malfunction  

by Pool Builders on 12-31-2011 in Articles

Even a properly maintained swimming pool gets the occasional outbreak of green algae from time to time; the key is learning how to further prevent the outbreaks and figuring out how to get rid of it. Before you even start treating your pool, you need to find the cause of the problem. If you have been keeping the chemicals at the correct levels then the cause is most likely do to an equipment malfunction.

You should first check the water level, if it is too low the pump cannot circulate the swimming pool. Next check the skimmer basket to see if is full, when impacted with debris; the flow of water basically stops. Many pools also have a float valve under the basket, take this out and feel if it has water in it, if full of water be sure to replace as this can cause your pump to run dry. Next go to the pump and empty the basket under the lid; make sure you have turned the pump off at the breaker panel. If you only turn it off at the timer, the next day it will turn on automatically, if you are still working on the equipment, this can cause damage. Get a small screw driver and feel if the pumps impeller has debris in it since only a little debris here will cause the flow of pool water to stop. Lubricate the pump lid oring and check the lid for any cracks or warpage. Fill the pump basket up with a hose for a minute the put the lid on and see how the system is running.

Your next task will be to take the filter apart, clean and inspect for any damage. Again before doing any work on the filter, make sure to turn the power off to the pump at the breaker. If it is a cartridge or de filter, clean out the elements inspect for rip, tears, or broken cores. If you have a sand filter, simply backwash. Sand is usually replaced every 3 to 5 years. If there are any rips or tears, replace element before putting back together. When broken, dirty water is allowed back to the pool. It is hard to inspect the sand filters. After you have started the system back up, take note of the filter pressure and put a mark on the gauge at the current pressure. The filter should be cleaned once the pressure has risen by 7 psi.

Now you will need to start cleaning up the pool. Start by skimming the top surface then brush the entire pool surface. Set the pump to for 24 hours continuously. With the pump running, add the required chemicals. Adjust the ph. to the proper level, wait a few minutes then add enough chlorine to raise it to 3 ppm. Wait a few minutes then add green algaecide, another few and finally add a clarifier. You should check the progress of the pool several times a day. Usually one dose of algaecide is adequate however a few doses of clarifier are usually required. Using chlorine tablets in a floater can help to keep chlorine in the pool throughout the day. Brush the pool service daily and clean the filter when required. You should let the chlorine levels drop down to 1.5 to 2 ppm before using pool.

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