D-D Kh Test Reagent 5L

D-D KH Test Reagent 5L

The D-D KH Test Reagent 5L is a professional-grade solution used to accurately measure carbonate hardness (KH/alkalinity) in aquariums. Stable alkalinity is essential for maintaining pH balance and supporting healthy coral and invertebrate growth, so precise testing helps you keep your reef or marine setup in optimal condition.

This concentrated reagent is supplied in a large 5-litre volume, making it ideal for frequent testing or for hobbyists who perform regular water quality monitoring. Designed for use with D-D KH test kits, it delivers reliable, reproducible results and helps ensure your dosing and water chemistry remain consistent over time.

Regular alkalinity testing with this reagent supports stable water conditions, balanced calcium-carbonate chemistry, and a healthier aquarium environment overall.