Fighting algae for the 3rd time!

[Watermom]

You can buy 20 Mule Team Borax in the laundry aisle at Walmart.

Diatomaceous earth is a powder made from the fossilized skeletons of tiny aquatic organisms called diatoms. It is used as the filter media in DE filters (among other uses). You can get it from a pool store and possibly from a home improvement store although I am not certain about that.

Your 5-Way kit only allows you to measure chlorine levels up to 5ppm. The kit we recommend (Taylor K-2006 or 2006C) will read chlorine readings up to 50ppm. So, having this kit makes it a lot easier to clean up a pool since it is necessary to keep elevated chlorine levels while you do so. We have found through the years that pool stores typically don't always give accurate testing results.