1 looped water unit completely in water reservoir, touching mat
5
[5] 1 looped water unit completely in water reservoir, touching mat
2 looped water units completely in water reservoir, touching the mat
10
[10] 2 looped water units completely in water reservoir, touching the mat
3 looped water units completely in the water reservoir, touching the mat
15
[15] 3 looped water units completely in the water reservoir, touching the mat