Grass Cylinder waterfall Landscaping is actually a quicksand cycle, the simple way to make the following:
1, prepare air pump, gas stone, rectangular foam, PVC pipe, plastic and other materials.
2, the foam board in the middle Amoy empty, size can be inserted into a PVC tube.
3, in the PVC pipe proper position drilling two holes, the foam board corresponding to the PVC pipe drilling Place Open two small mouth, the following mouth oblique cut.
4, at the bottom of the export placed plastic, used to put white sand.
5, air pump, gas stone access to PVC pipe, drive plastic in the white sand movement, to create a waterfall effect.
The principle is shown below: