The best plan would be to use this WITH the ammonia, rather than relying on it when you have fish. That way you do not have to worry about wc's and can be more lenient with testing. Plus, no risk with fish lives.
TSS is not made to be used with ammonia.If the fishless cycle with ammonia is what you want to do,don't waste your money on the TSS.If you do use it,just follow the directions on the bottle.I would be cautious in using it if the place you are buying it from refrigerates it though.