i am currently working on a batch of hard iced tea. it is a five gallon batch. when started i used 5 gallons of arizona iced tea and mixed in 6 pounds of cane sugar. i know its alot of sugar but i wanted it strong. anyway my problem is that i was ill informed about potassium sorbate and added 1/4 teaspoon per gallon to try to stop fermintation because it has been going for three weeks. well anyway fermintation did not stop and glad it didn't because it is still way to sweet. do i have to add more sorbate if i have to sweeten after fermintation or will the stuff i already added do the trick. i don't know if adding more will have bad effects. thanks for any help.