Anyone used the Home Depot water test

SSRider said:

I am moving to all grain, getting my first ingrediants on tuesday. I have a well as my water source, and a water softener. Im looking to test my water to see what additives I may need to use, or if I should be buying water. I found this water test kit at home depot for 10 bucks, but wasnt sure if it is any good. Has anyone tried it?

link

http://http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&langId=-1&catalogId=10053&productId=100176532

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SSRider said:

should I send them water from before or after the softener. The main line comes in directly to the softener so Getting water from upstream would be difficult to impossible. I would assume that I need to get it from after the softener as that is where I can actually get water from.

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