Are the Watering Rocks BPA free?
I checked with my manufacturer and they responded there is no BPA present in the plastic material.
What size batteries does it use?
Watering Rocks do not use any batteries or need electric. The rocks are designed to facilitate the drip from pressure and gravity. The Hanging Basket watering system is different in that the included pump requires electric.
See www.watering-rocks.com for pics, instructions, and more.
What color Watering Rocks are currently being offered?
The 2 colors currently being offered are Sandstone and White Granite.
How long does a 5 gallon rock drip for? Are we talking hours, days or weeks?
The rocks include 6 adjustable drippers. If all are connected and set at a very slow drip, which is usually all you need, it will drip for 2 – 3 days. Rocks can be hooked up in sequence to water for over a week. See video on our web page.