If you have a 25 thousand gallon cement pool and you are still getting spotty areas of algae on the sides of it even though you have shocked the pool twice how can you get rid of this problem?

Answer 1

shocking will not get rid of algae,algae feeds on phosphates so you'll have to get your phosphate level down to zero using a product a pool store sells to control this.good luck.

Phosphates are only a big factor in Salt Pools, The areas with growth are not getting circulation to refresh the active chlorine. Or you are not shocking properly, If you are shocking with a chlorine base product you have to bring your chlorine levels up 10 times above current levels if you miss and only go 9.5 times is all it does is add more chloramines to your pool creating even a worse problem. I suggest using a Non Chlorine shock with it you add 1 lb for 10,000 and it always works without a bunch of calculations, and if you use to little it just works a little less plus you can swim in 20 Minutes. Available from Kenny 801-232-5893 800-488-2436

Cleaning the filter helps.

k