Hi I wouldnt add the Ammo Lock all it will do is starve the bacteria in your filter. Also the Stress Zyme stuff is useless and the Stress Coat is only needed at water changes.
Best thing you can do is grab your self an API master test kit with ammonia and a bottle of house hold ammonia and add in the correct amount of ammonia (you can use the calculator section on this site in the link at the top of the website) then 12 hours later test your water for ammonia and nitrite - if it is 0 do a large water change the next day if its not 0 top it back up to what you need it to be (around 5ppm) to feed the filter and then repeat until the filter can process 5ppm of ammonia to nitrite and then to 0 nitrite in 12 hours and your ready for fish.
Ammonia is the chemcial created by fish poo (well all decaying organic material but its the poo we are talking about here) And its the ammonia that we use the filter to get rid of which is eaten up by tiny bacteria that live in your filter. Ammonia and Nitrite are the biggest killers of fish in the hobby but they are the most unavoidable thing in the hobby if you have fish. And its the filter that takes care of it.
So yeah get the test kit and do the method I mentioned above and it will bring your filter to full bacterial capacity that you need for fish and scrap the ammo lock and stress zyme as they will cause a lot more problems than help.
Well the ammo lock will the stress zyme is just highly unreliable. This is because it claims to be bacteria in a bottle however, the bacteria will be long dead before it reaches the shop. The bacteria in your tank needs a source of oxygen and a source of ammonia to stay alive other wise it dies off so if you think about how long it takes for these products to get from the factory to the store and then the fact that often some of these products are dusty the bacteria is dead in the bottle. The other option these companies have is to refrigerate them but how often do you see that in practice? And then again it needs to stay chilled from the factory, then in the lorry and then in the store so even the chilled stuff which keeps the bacteria dormant is never 100% reliable.
Ooo one more thing have a read around the beginners resource section in the my new tank section it will go over what I have talked about in a lot more detail
Hope I have helped
Wills