You may be surprised to learn the beautiful floating fountain you just purchased will not make your water body beautiful again.
Do you want to love your favorite water body again?
FACT: Stagnating or deteriorating water bodies are suffering from low dissolved oxygen levels. If you want to love your water body again, you need to focus your attention on increasing the overall dissolved oxygen content within the water.
Water aeration is widely known as the most viable solution to add dissolved oxygen to a stagnating water body. After all, water aeration is the process of adding diffused oxygen to water.
Water aeration helps stagnating water bodies recover from a lack of oxygen. Stagnating water bodies are not nice to be around or live next too. They stink, the water is murky, and, in the heat of the summer, green from algae and aquatic weed growth. This is why people like you take extraordinary measures to make their water bodies beautiful again, and rightly so.
So before you get that beautiful floating fountain for your neighborhood retention pond read this. Water aeration is most effective when the oxygen-rich air is supplied directly to the bottom of your lake or retention pond. By doing so, air is applied directly to the oxygen-loving bacteria that eat the muck off the bottom of the lake or pond. In stagnant water bodies a thermocline develops towards the bottom (see infographic below). Water below the thermocline is colder and anoxic in comparison to the water above the thermocline.
By applying oxygen to the bottom of the pond, you remove the thermocline and activate the bacteria you want working for you. Simultaneously, you remove the anaerobic-loving organisms from the lake that produce nasty things like blue-green algae.
Your floating fountain only circulates water within its vicinity and doesn’t go very deep. For shallow ponds, a couple of well placed floating fountains can effectively aerate your water and dramatically improve your water body. When your water body is deeper, the enriched oxygen doesn’t penetrate the first thermocline and thereby doesn’t activate the bacteria required to eat the extra nutrient load in the water, resulting in a pond that will continue to deteriorate.
If your pond is shallow and small, a beautiful floating fountain or two can work to make your water body beautiful again by providing oxygen enrichment. If your pond is deeper than, say, four feet, and larger than a couple hundred feet across, then subsurface aeration is required.