An accurate and economical liquid test kit. Tests tap water and aquarium water for 4 key parameters that affect the health of marine fish: High Range pH, Ammonia, Nitrite, Nitrate. Unique, clear dome packaging is waterproof, space-efficient and makes contents easy to see. Includes laminated, computer-calibrated colour card, 4 glass test tubes with snap-tight caps and easy-to-read instructions with information on how to correct unsafe water conditions. Liquid reagent bottles include child-resistant safety caps.