Leisure Time B Spa Defender， Quart<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Use weekly for continued protection from scale</li><li>Compatible with chlorine， bromine， ozone and biguanide sanitizers</li><li>For more than 25 years， Leisure Time has been the premier name in spa water care</li><li>Prevents scale formation</li><li>Compatible with chlorine， bromine， ozone and biguanide sanitizers</li><li>Removes existing scale</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41BQf45-JBL.jpg" noproxy>