Fran Co Posted July 20, 2019 Report Share Posted July 20, 2019 My above ground pool installer used round up landscape and weed granules under my liner. After a big rain fall my entire liner bottom has yellow stains in the pattern of how he distributed the granules. I can smell the chemical. After researching the ingredient Pendimethalin, Ive learned it contains a yellow die which stains and it is oil based and toxic! Does anyone know if this could be eating through my liner into my swimming water? I am concerned more about safety than aesthetics. He said he will replace my liner but it will take him a while to get to it. I don't know if it is safe to swim in. Quote Link to comment Share on other sites More sharing options...
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