Summary: A saltwater fish tank cycle is determined by the level of ammonia and nitrates in the water of the aquarium. Learn to tell when a salt water fish tank cycles with tips from the owner of a fish pet store in this free video on pet care.
Ryan Wells is the owner of Reef Runners in Lindon, Utah. He has many years of experience working with sea animal life.read more
"Hi, my name's Ryan Wells. I'm the owner of Reef Runners. We're a local fish store located in Lindon, Utah. The way you can tell when your tank is cycles is after you have received zero ammonia, zero nitrites, and either a trace or zero nitrates. These three different components make up what's called a cycling process. The way this happens is you have a different type of protein that is usually produced through either fish food, fish waste, or some other organic material. Biologically, you have different bacterias that will attack these and break it down for food. Their waste is turned into ammonia. Ammonia is their food source. They then convert this ammonia into nitrites. Nitrites are then consumed by even a third different type of bacteria. This bacteria consumes those nitrites and converts it into nitrates, which is their waste. Nitrates are a non-toxic form are used, are able to be withstood by different fish and invertebrates. The best way to find out when your tank is cycles is by testing for these. You can get different test kits at your local fish store, here at Reef Runners, or even online. After you've tested for these, you just want to make sure that you have zero ammonia, zero nitrate and zero or a trace of nitrates."
eHow Article: How to Tell When a Saltwater Fish Tank Cycles