More on Test Kits
I am a beginner and I made the mistake of first, not owning a phosphate teskit and second, of purchasing a phosphate testkit that stated on the box it was recommended for saltwater, but it turned out it was not sensitive enough. Based on a recommendation from this site I purchased the Salifert Phosphate test kit and I am very happy with it. (It showed me the primary source of my algae problem).