Recurring algae can be a problem this time of the year. There can be several contributing factors, heat, rain, letting chemicals get out of balance, and even transfer form one pool to another. Recurring algae is usually Mustard Algae. It is a yellowish green color that usually starts growing on the pool walls and on the pool floor. It will then turn the pool water green. So how do you get rid of mustard Algae and keep it from coming back? First vacuum the pool on the waste setting. Mustard Algae is resistant to the normal chlorine levels so to get rid of Mustard Algae you can use a Yellow Out type product. To keep the Mustard Algae from returning to your pool you should use copper algaecide. Copper algaecide should be used as per the manufacturer instructions and should not be used during high levels of chlorine to prevent staining. Use clarifier to help filter out the algae and Metal Out or Demineralizer to prevent staining.
5 Responses on Why Does My Pool Keep Turning Green?
myspool floor is green. pool just serviced about a week ago. cleaners said they used all the proper chemicals. i’ve been using vacume. pool man came back today tested water. says all, not under or over chemicalized. please help! don’t what else to do.
It could be mustard algae http://www.royalswimmingpools.com/blog/why-does-my-pool-keep-turning-green/
It may be several reason why it is turning green. Visit for more information on why it is doing that.
This has happened to me in the past and I added stabilizer to keep the chemicals in the pool. Once the pool is stabilized the chemicals will maintain their levels and it should clear up.
We have a pool service company in Arizona and run into this problem all the time. The chemical levels in your pool can be right where they need to be and mustard algae can still easily form. Another factor that breeds mustard algae can be phosphates coming from leaves and debrees entering your pool as well as from your tap water. To get rid of it the first thing we do is bump up the chlorine level and brush the pool walls and steps. This will release it from the pool walls, allow the chlorine to neutralize it and filter it out. If this doesnt work than we use an algecide which will zap it right away. We use HASA Algecide. Hope this helps.
Leave a comment on Why Does My Pool Keep Turning Green?
RSS feed for comments on this post · TrackBack URI