I have a few planted aquariums around my house, 2 low tech, and 1 high tech all decked out with everything you could imagine. I mix my own fertilizers for the high tech tank and dose for a specific amount on a daily basis. I ordered another companies phosphate test kit, while it was very accurate it was a little cumbersome to use compared to API's version. The API version of the kit comes with a glass tube much like their other kits which I prefer over the tray method I used in the other brand kit. The API kit appears to be just as accurate as the other brand in my comparisons and makes testing for phosphates a little less time consuming. The color chart that is included is a little difficult to read, the lower levels are very similar in color, but I have come to notice the subtle differences over time.
Rating:
[4 of 5 Stars!]