i already have the quick cure but i dont think im gunna need to use it , as the problem is almost gone .. theres just one spot left and its not leaving im gunna buy some salt tommorow since alomost evreythings closed today(easter). do u buy aqurium salt that you find at walmart of an lfs or do i just buy non idozised salt at the grocery store? whats the difrence? and can fish live in water at 88 degrees for 2 weeks?