An automated hydroponic greenhouse dosing system uses the following algorithm to adjust nutrient concentration levels based on the growth stage entered by the operator:

1      stage ← USERINPUT
2      IF stage = 'seedling' THEN
3          dosage_ml ← 5
4      ELSE IF stage = 'vegetative' THEN
5          dosage_ml ← 25
6      ELSE IF stage = 'flowering' THEN
7          supplement ← 'potassium'
8      ELSE
9          OUTPUT 'invalid growth stage'
10     ENDIF
11     FOR pulse ← 1 TO dosage_ml
12         IF pulse < 15 THEN
13             INJECT_PUMP('A')
14         ELSE
15             INJECT_PUMP('B')
16         ENDIF
17     ENDFOR