Test kit for a complete water analysis in planted aquariums. Easily and reliably monitors water parameters in aquariums. Determines: pH value, carbonate hardness, CO2 directly, iron, magnesium (freshwater), potassium, phosphate, silicate, and nitrate. Add the reagents to the water samples, compare with the color chart, read the values, and check the analysis sheet for any recommended actions. The comparator system takes into account the inherent coloration of the water. Includes a child-safe reagent bottle in a waterproof plastic case. Refill reagents are available separately. Package contents: 1 test kit including 22 reagents, 12 glass vials, 1 special potassium cuvette, 2 syringes, 3 measuring spoons, thermometer, comparator block, 2 plastic cuvettes, color charts, pen, protocol sheets, and instruction manual.