There is nothing there when I look at that link
its been used before and cycled before but my daughter said they started using this one again last week but its cyled.Donna, don't worry about the salt right now- mollies do like some salt but right now I'd be more concerned about your stocking issues. The pleco in particular won't work in a 10 gallon but the rainbow shark is going to be a problem as well and if you had one jumper already it sounds your water quality is already suffering. Is it a fairly new tank?