Review on FUNSWTM 7 in 1 Aquarium Test Strips: Accurate Water Testing for pH, Nitrite, Nitrate, Chlorine, GH & KH Levels by Cynthia Chacon

I purchased this product as a beginner before I knew about the master test kits. For my purposes it worked well measuring pH, nitrite and nitrate. The gH and kH measurements were somewhat inaccurate as they were much higher than they actually were (confirmed with the main test set). I would also like these strips to be tested for ammonia, but ammonia should be accurately measured anyway. They are great for beginners or people with simple aquariums with few fish. For those with multi-tank split tanks, invest in a simple test kit for more accuracy and value. Otherwise they work fine.