The Cure Tender time-released concrete watering system automatically releases water required for concrete curing onto the concrete and under the cure blankets, allowing the concrete to be unattended. Self-contained and solar-powered, the system can be used on vertical or flat concrete. Hook up the specially designed watering hoses and the concrete will cure for 50 to 60 hours with a constant supply from the 725-gallon tank. Cure Tender. 714-299-0671.