Is there anything wrong with using pre-filled bags to build an earth bag structure? I can get ready made bags for around $2.50 a bag. Seems like a big time saver. One place said I could get sand or gravel filled bags. The other said they were filled with sand from recycled concrete.
Until you dig a hole, plant a tree, water it and make it survive, you haven't done a thing - Wangari Maathai