Quick question, have searched as best I can but cannot find if this has been asked before. Basically I have been hunting around where I live for DE (more about the challenges for pool care in Zimbabwe detailed in this: http://www.troublefreepool.com/no-wa...st-t71335.html post) for about 6 months now in order to experiment with the method of adding small amounts to sand filter for added water polish/ filtering.
Today, unexpectedly and finally I came across a guy who had some unopened bags of the stuff (pool grade sold under the name of Africhem, a pool chemical company in SA) he said it had been lying around for years, between 5-20 years he didn't know as he didn't buy it. He reckoned it was out of date now so gave it to me for free.
Does this stuff go bad?
I hope not as then I have 10kg's of it for free!!!!!!
Cheers as always for help and input received.