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.
- Up to 40 tests
- Reagent bottles K-1, K-2, and K-3
- 2x 1ml syringe
- 2x Testing vials
- Testing instructions