Originally Posted by 27mtaylor
I use a test kit by aquarium pharmasuiticals. It seems to do pretty good.
Not the best test kit on the market, but gets the job done. Just make sure that the kit you buy is not expired. Also, keep the kit in a cool place and cap everything really well as they tend to get very inaccurate with age and exposure to air or heat. That is the disadvantage of their kits. Other than that, they are fine! I use them myself for routine testing all the time.