Response to Hi. The kit with the Burst consists of a chlorine shock and the other kit consist if a chlorine-free shock. The Chlorine-Free Shock kit is used with pool that does not use chlorine or use a chlorine generator. 

An image is worth 1,000 words! Add an image or two to your comment to help ensure it is understood accurately.

Yes, please email me exclusive discounts, swimming pool tips and helpful how to guides. This comment may be posted on a public site. Do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory language.