Well, it's definitely a 'start-up' kit!  Enough to get the spa up and running but be prepared to purchase chemicals fairly soon for maintenance!  Also, there are instructions to correct certain water conditions but no products(s) supplied to do so.  Low alkalinity water was the first one that comes to mind.  Overall the kit will get you going but that's about it.   Also, the quantities of chemicals in the kit that are supplied makes the kit quite pricey when compared to the chemical quantities/prices when purchased at a retail level.  The problem is the average purchaser is not aware of what is needed but that can be addressed if one downloads and studies the owner's manual prior to purchase.  I did download the manual but neglected to study this particular section.  Hope this helps someone else!