Ok first the disclaimer--Yes I do sell them and yes I do try to educate on them and no I have never used them for any Saltwater tank just fresh. For anyone who is wanting to use any of the bacteria starter liquids here is something to think about: Bacteria changes with bio-load and even though these products work what is the long term? If you are not letting the tank cycle on your own how will you know what a spike looks like? The water doesn't change color or give you warning. I have only recommend these products in emergency when there is livestock in the tank and some catastrophe happens to the filtration. Taking the cycle slow helps develop good habits like regular testing , looking in the tank to make sure everything is ok and doing proper water changes ( too many cycle drags on-- too few and you can build up nitrates or worse and cycle drags on) If you feel the need to add these products after the cycle I.E. after adding lr you have added to much too soon and have not followed proper stocking procedure. As I said the bacteria changes and it grows slowly so should your tank. Overstocking too fast is not an emergency its a problem. An emergency is changing all the filter pads at once in a FO tank removing all the bacteria, an emergency is medicating a tank and killing the bacteria bed, an emergency is rinsing your filter pads in tap water and having the chlorine kill your bacteria. I guess what I am saying is an emergency stems for an accident not an intentional move. Yes they have a place in the aquatic world no that are not a cure all snake oil elixir.