Red Sea has a full line of test kits as well as combo kits for your saltwater aquarium and Bulk Reef Supply carries them all. Red Sea kits are one of the best aquarium test kits available and for this reason are BRS Recommended. Some of the best features include an easy to use titrator, color wheel and reagent refill packages which make the kits very economical. The combo Red Sea test kit packages like the Reef Foundation Pro, Algae Multi Control and Color Pro kits are packaged in an intuitive way and come at a significant discount. These aquarium test kits include features normally only found in more expensive lab grade test kits. The most popular of the available kits are the Red Sea Calcium test kit, Red Sea Magnesium test kit and the Red Sea Alkalinity test kit.