How long after using quinine sulfate can I put inverts back in?

[sevens_up77]

How long after using quinine sulfate to kill marine ick can I return my inverts to my display tank?
Thanks

 

[pumarjr]

once your tank has cycled again, it's then safe to re-introduce them to the tank. Using that product in the DT pretty much destroys your Biological Filter, you will need to wait for the tank to cycle again as your tank will not be able to convert ammonia to nitrites and for nitrites to nitrates, both ammonia and nitrites and unhealthy for fish.