Adding a water feature to your garden is an effective design element, complex hydroengineering system, which can be installed in pools, ponds or lakes. Fountains consist of pump, water reservoir, insulating materials, filters, wiring and pipes. They are generally classified into two groups: indoor and outdoor fountains. The second ones are easily subjected to serious contamination. Litter and foliage leftovers may clog water reservoirs, that’s why having a good filtration system is crucial. Indoor fountains are quite small and as a rule have less complex structure.