API Freshwater Master Test Kit substrate This is compatible with all

This is compatible with all standard pressurised aquarium CO2 systems and regulators

Packed in 'Liquid Amazon' buffered 'black water' solution

the FRESHWATER MASTER TEST KIT comes with 4 test tubes and a convenient holding tub for easy storage

Aquarium Soil Powder ensures good and active growth from the beginning

but not suitable for PE

API Freshwater Master Test Kit substrate This is compatible with allThe API FRESHWATER MASTER TEST KIT measures the 4 most important levels in freshwater aquariums quickly and accurately, including pH, high range pH, ammonia, nitrite, and nitrate. With scientific accuracy for professional results, the FRESHWATER MASTER TEST KIT comes with 4 test tubes and a convenient holding tub for easy storage. The kit also includes a step by step instruction booklet with a colour chart that provides information on how to correct