Jump stater are a waste of money. Spend it on LR
instead. They may work as claimed at getting water parameters ready to go but they do nothing to prepare the tank for long-term livestock. The typical scenario is as follows...John wants a SW
tank. John buys what he needs and using a jumper-starter product. All water parameters are reading very well after a short time. John puts a bunch of fish in his tank. All of John's fish die from NH3
posioning and he does not understand why.
Building up the benificial bacteria needed to keep a tank de-toxified just takes time. If it is rushed you will only be in a constant battle keeping water parameters at an acceptable level you will waste a lot of money of fish that keep dying.