AquaPots® Lite Insert - Round - 4 PACKWe've taken a customer favorite and made it available as a 4 PACK so it's easier than ever to make your garden a self watering haven and save big! Now, many containers can be self watering AquaPots! The AquaPots Lite Insert works in conjunction with AquaPots Lite and many existing containers to make them self watering. The 13. 5 insert holds 2. 9 gallons of water and fits round containers with a drainage hole. Simply set the insert down into a 16 20"