Parameter | Range | Preferred method | Test Standards | Overview of test | Measurement LED | Color change | |
1 | Alkalinity | 0 - 120 ppm | LaMotte | 50 ppm | 5 mL of tank water, add 5 drops of solution. Mix. | Custom 510 nm LED or Red LED | Green |
2 | Ammonia | 0 - 8 ppm | API test kit | 2 ppm | 5 mL of tank water, add drops from bottles 1 and 2. | Red LED (RGB board) | Yellow/Green |
3 | Calcium | 0 - 200 ppm | LaMotte | 100 ppm | 5 mL of tank water, add 5 drops of CH1, mix, add 5 drops of CH2 | Custom 575 nm LED | Pink/violet |
4 | Iron | ||||||
5 | Nitrate | 0 - 200 ppm | API test kit | 30 ppm | 5 ml of tank water, add drops from bottles 1 and 2. Requires good mixing. | Green LED (RGB board) | Red |
6 | Nitrite | 0 - 2 ppm | API test kit | 1 ppm | 5 mL of tank water, add drops of nitrite bottle 1. | Green LED (RGB board) | Pink |
7 | pH | 6.2 - 8.2 | LaMotte | pH 7.0 | 5 mL of tank water, add 4 drops of solution. Mix. | Custom 557 nm LED | Pink |
8 | Phosphate | 0 - 2 ppm | Hach PhosVer3 | 3 ppm | 10 mL of sample, add packet and mix for 3 minutes on a stir plate. | Custom 880 nm LED | Blue |
9 | Potassium | 0 - 50 ppm | LaMotte | 12.5 ppm | 5 mL of sample, add NaOH solution and NaTPB powder. Mix. | Red LED (RGB board) | Turbidity assay |
10 | Sulfate | 0 - 300 ppm | Hach SulfaVer4 | 150 ppm | 10 mL of sample, add contents of packet and shake. | Green LED (RGB board) | Turbidity assay |