moldy pool


Old 08-18-05, 08:29 AM
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Question moldy pool

My husband and recently bought a a older home built in the 60's but since trying to upgrade it we have had nothing but problem covered by anouther problem on is the pool that is also a older pool I belive built in the early 70's. The home owners before us painted the bottom of our pool which we have told is pretty common when when people sell there homes. But the paint started chiping and mold started to grow and no matter how much shock alge cleaner or claerfier we put in the mold would not go away finally after bacoming awamp water we were told that the mold is trapped under the paint so we drained our pool and are trying to scrub it clean but we are worried that it might need resurfacing. We are already in debt due to a ton of other problems please halp with cheap ideas to help our pool. We did has our filter system looked at and were told that it is the proper size but we probley could change the sand, Please help
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Old 08-18-05, 12:48 PM
Join Date: Dec 2004
Location: So. Calif.
Posts: 540
Ill wagger the " mold " as you call it is actually black algae, as you may know algae is a plant life, black algae is the worst of them all to get rid of if the pool is drained now scrape the dark "flower" off use sand paper if you have to , you cannot paint over it at this time as the algae will lift the paint its like painting over rust on an automobile, black algae has been documented to extend its root system through the plaster , gunite, and into the soil as much as 10 ft. so you have to kill the roots, after scraping the black part off , re fill the pool and buy a quart of Silvertrine [ made by applied biochemists ] available at most pool supply stores. follow the directions ,

as far as the sand filter , if its been 4 yrs since the sand was replaced , replace it with # 20 silica , or better yet replace it with a better filter a 60 sq. ft. d.e. filter.


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