Hot Tub Serum Total Weekly Maintenance For Hot Tubs and Spas<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Small dose once a week will do the job</li><li>Keeps plumbing clean up to 6 months</li><li>You'll never stop using this Eco-Friendly formulation</li><li>Half the cost of less effective bio-maintenance competitors</li><li>Maintenance is simple using your existing sanitizer</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41AYX2Y8yzL.jpg" noproxy>