There is no need to worry about water evaporation anymore now that the Eshopps' new ATO Small Reservoir Tank is here. The ATO Small is a reservoir tank that can hold up to 2.5 gallon of water with a shut-off valve attached on the unit. It helps to maintain the water level in sumps. The dimensions are 10' x 5' x 12'.
Reservoir tank, 2.5g
With shut off valve