#pH testing

API Freshwater Master Test Kit Review – 800 Tests of Aquarium Peace of Mind

I dropped my first neon tetra into a 10-gallon tank on a Tuesday morning, fully convinced I'd done everything right. Three days later I learned about ammonia spikes the hard way. The API Freshwater Master Test Kit has been sitting on my shelf ever since — and if you keep any freshwater aquarium, it should probably be sitting on yours too.