Potassium is an essential element in both the skeletal construction and coloration of certain corals.  Testing should be done to maintain Potassium (K) in an optimal range of 380 - 420 ppm.

Specifications:

• Up to 40 tests

Includes:

• Reagent bottles K-1, K-2, and K-3
• 2x 1ml syringe
• 2x Testing vials
• Testing instructions