This testing kit is very valuable - you need to keep that water tested, especially for ammonia levels. Rarely do I have a fatality in the tank, and when I do, it's due to "old age" :-).
Seriously, everyone who owns a tank, be it fresh water or salt water, should invest in this product. Healthy fish are happy fish and this is the way to keep them that way. Great value, which is what I always receive from PETMOUNTAIN.
Suzanne from North Ridgeville, OH