idiot..... haha
you have probably killed your clutch. drain it and put the correct trans oil in, that is for wet clutches. you may have to run it a few times and drain it to get your clutch back.
if that fails, youll need a new clutch.
no stop leak isnt good in this case, because it has additives you dont want for your clutch, and stop leak is for rubber seal (helps make them soft and seal better)..
clean it down and find where its leaking and rectify it.