For your 2L Shape Shift reservoir, here are the depths: 

• With the baffle engaged, the depth is 2.5 inches / 0.99 centimeters
• Without the baffle engaged, the depth is 3.5 inches / 1.38 centimeters

For your 3L Shape Shift reservoir, here are the depths:

• With the baffle engaged, the depth is 3 inches / 7.6 centimeters
• Without the baffle engaged, the depth is 4.25 inches / 10.8 centimeters