I am draining my pool this weekend in Phoenix Az and am curious if anyone has suggestions. I am renting pump from Home Depot and have a plaster pool about 17 yrs old. The water is old per Leslies Pool and very high in solids. I have a terrible mustard algae problem during the summer which may be due to flowering plants around the pool and 2 dogs that are constantly in and out of the pool during the summer. Chlorine and Chlorbrite knock it out for a day or two then its back.
Leslies suggested a product called Purge that is to be put in the pool for 24 hours before I drain it. They said it will kill bacteria / algae that is in the pipes and sand filter. It is about $35 and I'm not sure if I should use this product.
After draining, I am going to give the interior a spray down with liquid chlorine as a pool service person I ran into said it would kill any algae that may have attached into the plaster.
Then I will refill and begin following the pool school recommendations I discovered on this wonderful site.