2 Pack: Bromine Spa Frog Replacement<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>150 grams of the Bromine</li><li>Can be used in the floating or inline Spa Frog chemical system</li><li>Use this product in your hot tub to sanitize the water</li><li>Bromine Cartridge lasts one to two weeks to keep your water looking and feeling great</li><li>2 Pack</li></ul></div><img src="http://ecx.images-amazon.com/images/I/11f9fDdbf%2BL.jpg" noproxy>