Water Brick Storage

[Abracadabra]

Just wondering if anyone has used the water bricks from Shelf Reliance/Thrive Life?
I have bought several and decided finally to fill them but I wonder if I can put them directly onto my floor under my bed? We don't have carpet in our home we have a laminate flooring which resembles hard wood. I know you can't put water barrels or bottles directly onto a concrete floor but I just wondered if I needed anything between the bricks and my floor?


Thank you