There’s a reservoir of water that has a pump and a sump (also known as a drainage pump).
The pump moves water up a pipe.
Gravity brings water back into the reservoir, which is drained by the sump.
3 ways to take care of your water feature
Deep clean regularly - Deep cleaning your water feature will keep the water clear and will reduce the chances of damage to the pumps. You should follow the manufacturer’s instructions when deep cleaning your water feature to avoid breaking it. You will also need to consider the material your water feature is made from so you can choose the right tools to clean it.
Keep algae away - You can keep algae out of your water feature by staying on top of things. Prevention is key and is much less work than trying to fix the problem. To stop algae from building up, you should add wildlife-friendly algaecide to your water source to kill any algae present and to prevent growth in clean water. The position of your water source will also affect algae production, for example, sunshine encourages algae growth, so putting your water feature in a shady area is best.
Don’t use bleach - You should always use wildlife-friendly products to clean and maintain your water feature. One chemical you must avoid is bleach. Not only is this harmful to the ecosystem, but it can also put your pets, children, and other family members at risk if they come into contact with the water. Using bleach in a water feature also damages the pumps as they’re not designed to deal with it. It can also corrode and stain many designs, including those made from stone and stainless steel.