Convenient Bundles Aquarium Water Test Kit – 7 in 1 Test Strips for Fresh Water and Salt Water Aquariums and Ponds – 100 Test Strips Included in Every Pack

Value for your money, these work great and fast. Most accurate at night before bed.

I use In my aquariums easy for me to use.

Not accurate at all. It showed my pH below 6 and nitrites / nitrates 100+ when the API kit shows a pH of 7.8 and low nitrites(ates).