API Phosphate Test Kit For Freshwater And Saltwater Price:  $12.50 (as of 25/03/2022 20:40 PST- Details) & FREE Shipping.

Contains one (1) API PHOSPHATE TEST KIT 150-Test Freshwater and Saltwater Aquarium Water Test Kit, including 2 bottles of testing solution, 2 color cards and 1 glass test tube with cap
Reads phosphate levels between 0-10 ppm
Helps monitor and adjust pH and prevent invisible water problems that can be harmful to fish and corals

Usually ships in 24 hours