I have chloramines in my tap water and I have tried both Amquel and Prime. I prefer Prime for the reason stated above, it's concentrated so I use less.TKOS said:Do you have chlorine or chloramine. With Chlorine any cheap dechlorinator will work fine. With chloramine if you are changing rather small volumes of water the same stuff will work but with bigger changes it is important to use one that deals with the left over ammonia. Prime and Amquel seem to be the better choices.