Kem-Tek Super Shock Quick 5-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Quick dissolving granular treats 20000 gallons</li><li>Pre-measured pouches</li><li>Swim 15 minutes after use</li><li>Controls algae and bacteria</li><li>Super concentrated formula</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51y7Z3VLoxL.jpg" noproxy>