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David Bowden
David Bowden, General Contractor
Category: Pool and Spa
Satisfied Customers: 234
Experience:  Owner at Floridaco
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I have a fiberglass inground pool using Baciquil. I wanted

Customer Question

I have a fiberglass inground pool using Baciquil. I wanted to close the pool but the water is green. I had the chemicals checked and the pool people said everything is OK as chemical wise it is ready to close. I vacuumed, added extra shock and PH increaser - in case, but the water is still green. I'm thinking I should not close intil the water is clear. Any suggestions?
JA: Who manufactured the pool?
Customer: don't know off hand, but I've had it for over 5 years
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: It's been fine all summer. I've had to add PH increaser twice to keep the water clear, but other than that no problems. I have a sand filter - the sand was changed in 2016 season
Submitted: 1 month ago.
Category: Pool and Spa
Expert:  David Bowden replied 1 month ago.

Here is a link to better understand how deal with the pool being green and what may be causing it. Green pools can be very frustrating to correct and get from coming back. You will need to focus on 3 key items.

1. Filtration. You need to start with a clean filter, backwashing may be necessary after every vacuuming session. You need to remove the algae from the system otherwise you are just recirculating it back into the pool where it can continue to grow. The filter also needs to run 8-10hrs a day so the chemicals can do their job.

2. Make sure the chlorine levels remain high even after shocking. Shock is a short time cure, but it may not be enough to overcome the algae growth. Test the water daily and add the proper amount of chemicals. If may also require a different type of chemical to be added, example is granular chemicals vs. liquid.

3. If you do not see any immediate results you may need to change the water. If a water change is necessary then you have an opportunity to really clean the walls of the algae before adding more water. If you don't then changing the water will have little impact.

http://www.wikihow.com/Get-Rid-of-Green-Water-in-a-Swimming-Pool

Expert:  David Bowden replied 1 month ago.

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