Yeah Im going to take some water to the lfs to get tested, it's just weird that my ammonia test kit doesn't work, like the water never changes colour when I add the solution. Also I haven't got a nitrite/nitrate test so that could be it also?
To the question above, I slowly added water to the bag (like a little at a time) then when the bag was quite full I put them in.
Also, I noticed when I put them in the currant would push them to one corner of the tank, why would they sell a tank and pump combo that is too strong for the tank. It does do just over 4x the water volume an hour which I have read is normal. But they were really fighting against the currant.