Why does my vinyl pool keep turning green?
Emma Miller
Updated on January 18, 2026
When the levels are properly balanced, chlorine will keep the algae at bay, but the water will slowly begin to turn green as the algae take over if there’s not enough. But be careful—adding too much chlorine in pool water can cause those metals to oxidize and turn the pool a different shade of green.
What to do for a pool turning green?
How to Fix a Green Pool Fast
- Vacuum Your Pool to Waste.
- Brush the Pool Walls and Floor.
- Test The Water For pH and Alkalinity.
- Shock Your Pool with Chlorine to Kill Algae.
- Run, Filter, Run!
- Test, Balance, and Test Again.
How do you keep a pool from getting slimy?
Use a pool net to skim away leaves, dead bugs and debris from the surface of the pool. This will prevent them from falling and settling down in the slime at the bottom, where they can rot and create more algae and bacteria. Skim the pool at least once a day to keep it clean.
What does yellow gone do?
Yellow Gone has an easy-to-use formula that is safe for many pool surfaces to help keep your pool clean when used prior to a shock treatment with an epa-registered chlorinating compound that kills green, Mustard, pink, and brown algae.
What is the fastest way to clean a green pool?
Fastest Way To Clean A Green Pool
- The fastest way to clean a green pool is by using pool chemicals and your pool filter.
- Adjust your pH and alkalinity levels in the pool by using Alkalinity Plus and pH and pH minus.
- Add an algaecide to your water to remove the rest of the green algae.
Why is my pool cloudy and slimy?
In most cases, the walls and floor of your pool feel slimy and slippery due to a lack of pool maintenance. Water chemistry is important in order to maintain clear and bacteria-free water. Generally, slippery and slimy pool walls are an early indication of bacteria and algae growth.
How long can water sit in pool without chlorine?
I think the answer to your question is about 3-6 days. The problem is that the chlorine that you need to keep the bacteria in check is used up more quickly as the temperature rises, the activity increases, and as sweat and other body stuff is put into the pool.
How long does yellow out take to work?
Since most pool owners keep their pool pH between 7.2 and 7.6, you will probably need to raise your pH to ≥ 7.8 or higher to use YELLOW OUT® effectively. pH can be raised with soda ash or a pH increaser and it usually takes at least 3-4 hours.
How long after adding yellow out Can you swim?
Answer: Shock the pool 12 hours after application of YELLOW OUT® and a 2nd time 24 hours after application of YELLOW OUT®.
Is it OK to clean vinyl pool liner?
The vinyl pool liner in your pool is designed to add a nice finish to the bottom and sides of your pool. It also prevents the growth of algae, bacteria, and fungus in the pool. Over time, the pool liner can fade or accumulate stains and dirt. To clean a vinyl pool liner, you can brush, wipe, and vacuum it.
What can I put in my pool to make it green?
One fast way to turn your pool water green is by accidentally adding chlorine to a pool with bromine. You are suppose to shock bromine pools with chlorine, just make sure not to mix the two chemicals, and do not add to much chlorine.
How to care for my 12’x 30 Intex pool?
Cover the pool when not in use to reduce evaporation and dirtying of the water. Disassemble and store your pool if the temperature in your area falls below 40 degrees Fahrenheit in the winter. Drain the water by removing the cap on the drain valve on the outside of the pool and running a hose to a safe area to allow the draining water to flow.
How much water does a 12 x 30 pool hold?
Do not attempt to fill it any more than that, as this can cause leaking and possibly even breakage in the wall. Intex estimates that the 12 x 30 pool holds about 1,353 gallons of water. Follow all product instructions for installing the filter and adding chlorine to the water.