Red Sea Potassium Pro - Test KitIt?? s all in the balance Red Sea?? s Potassium Pro Reef Test Kit is a unique advanced titration test, measuring the level of Potassium in your reef aquarium to a high accuracy of 3ppm. ? The Potassium Pro?Reef ?test kit enables accurate dosing of Red Sea?? s POTASSIUM+ TRACE COLORS B?Supplement ?which is part of the complete Red Sea Reef Care Program. Kit includes: ?? Titrator ?? Color card ?? Instruction manual ?? 5ml syringe ?? K reagent A ?? 15ml