Check the listing for details. AquaLabs Master Aquarium Test Kit 5 in 1 Freshwater Saltwater Testing Kit. Condition: New. Listed at 67.69 USD. Take complete control of your aquarium’s water chemistry with the AquaLabs Master Test Kit 5 in 1 , the ultimate tool for maintaining a healthy, thriving aquarium. Designed for both freshwater and saltwater systems, this professional-grade kit delivers laboratory-level precision in every test. Test Parameters Included: Ammonia (NH₃/NH₄⁺) – Detect early signs of toxicity before they harm your fish Nitrite (NO₂⁻) – Monitor biological filtration performance Nitrate (NO₃⁻) – Track long-term water quality and nutrient buildup Phosphate (PO₄³⁻) – Keep algae growth under control and nutrient levels in check pH – Ensure stable, optimal acidity/alkalinity for all aquatic life Each test uses high-accuracy liquid reagents formulated for clear, consistent colour devel.