Red Sea Marine Care Test Kit - Easy-to-use tests for the accurate monitoring of all of the important parameters during the biological maturation of marine and reef aquariums. NH3/NH4 | NO3 | NO2 | pH | KH Red Sea Marine Care Test Kit is Complete multi-test pack including all of the tests necessary to monitor the biological maturation of new systems and for the ongoing maintenance and algae management of fish-only aquariums. The Marine Care Test Kit includes the tests pH, KH, ammonia, nitrate and nitrite in a durable, chemical-resistant plastic box.