A reef system is as dynamic as it is beautiful.  The balance of nutrients and elements changes on a daily or even hourly basis.  While many of these changes are manageable through consistent maintenance, having access to rapid results is essential to prevent small problems from becoming large, and an invaluable tool for achieving unparalleled results.  Waiting too long for results can limit the potential of what you can achieve, or worse, result in problems that could have been solved more easily.