You can keep a solar water feature clean by frequently clearing out debris in the water. Leaves are the usual culprit of dirty water. They get soggy and break down quickly if you let them be. Eventually, the leaf gunk causes blockages in the water feature’s filter system. Blockages can lead to inefficient water flow and will lessen the lifespan of your water feature. That said, it’s best to check and change the filters once in a while.