Q: Do I need this and how does it work.? is it connected to any thing like water or just a stand?
A: This is a much easier and more convenient way to clean a cell. This item simply screws on to one end of the cell, so you can fill it up with the cleaning solution like filling a vase with water. You don't strictly need it, you can use a large bucket to clean your cell; that requires more cleaning solution and can be harder to handle.
Q: will the cleaning stand nut replace a cracked one on my salt cell?
CIRCUPOOL® CLEANING STAND FOR CIRCUPOOL RJ, UNIVERSAL, AND SI SYSTEM
can the nut with this replace a cracked nut on me cell housing?
A: Excellent question, but unfortunately no it won't serve that purpose. However, if you go in the website navigation to Replacement Part >> Parts & Accessories >> then choose your model line, you can purchase your systems threaded collar and union that would be needed in such circumstances.