Pumps for Garden Ponds and Fountains

March 29, 2017

Instead of imagining what pumps types work best in garden ponds and fountains, try picturing what the garden would look like with a substandard mechanism. The water feature would likely work, but it would expel a trickle, not a torrent of scintillating water. So, if a dynamic flow pattern is important to you, take an extra moment to weigh the pros and cons of garden pumps.

Why Garden Pond Pumps Matter

At first, a new garden grotto is a pleasing water feature. It gurgles at the edge of your consciousness. The wetted air freshens the grass and nearby bushes. It reinvigorates your work-frazzled mind and acts as a dynamic centrepiece. Certainly, all of this is true, but there's more. The pump aerates the water so that little swimming fauna and growing flora can breathe. It basically stops the fluid from becoming a standing pool of unhealthy muck, a place where bacteria will grow and flies will buzz. Now, while it's true that a fountain is intended as an aesthetically appealing water feature, it still requires a capable pump. Again, this powerful water impeller ensures the fluid is aerated and free of water spawned contaminants.

Watching Fountain Pumps Gush and Gurgle

The water rises above the expeller nozzle, flies a metre free, before coursing back into a basin as a whitecapped foam. The pump is working as it should. All nasty anaerobic bacteria has been ousted because of the fast flowing current. Odours are gone, the water is blue, not brown and brackish. But how do we select a fountain pump that follows this active discharge pattern? Unlike the waterfall, it's not enough to push the water up an incline or raised tube so that gravity can take over. First of all, is the pump submersible? It's obviously a sealed and waterproof package, an impeller and electric motor, but so is the out-of-fountain model. Lift height and head height are the next features to weigh. Practically speaking, the head height makes sure the water reaches the discharge nozzle. That's an important feature, sure enough, but don't forget the lift height, the discharge feature that decides the height of the fountain's gushing stream.

Pump types and litre per hour discharge rates are key. In the garden pond example, for instance, the head water expelled will accommodate the width of the waterfall. That's a different metric from discharge height, yet it's every bit as important in the final scheme of things.

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