2-month reagent kit (based on the standard testing schedule of 4-Alk/2-Ca/2-Mg per day). The kit contains at least 240 alkalinity tests and 120 tests for Calcium and Magnesium.

The kits include:

• Two bottles of Reagent A (replaced every month),
• One bottle of Reagent B (replaced every two months),
• One bottle of Reagent C (replaced every two months),
• One bottle of seawater sample for calibration.

Tags: aquarium water test, water test replacements