How To Get Clean & Clear water Ponds

 Algae influence the water quality of the pond mainly by affecting the balance among dissolved oxygen, pH, carbon dioxide and nutrients. During photosynthesis, algae produce oxygen, remove nutrients and take up respired carbon dioxide from both the fish and the algae itself. In heavily stocked ponds, the water becomes super-saturated with carbon dioxide. High levels of carbon dioxide can quickly depress the pH of the water to levels below seven if the operator is not careful to maintain proper alkalinity levels and adequate aeration for stripping. During active periods of photosynthesis (during daylight hours), algae can quickly strip the carbon dioxide out of the water, and pH levels can rise above nine in a matter of hours. Fish not acclimated to such sharp shifts may initially show signs of stress.

At night, both algae and fish consume oxygen from and exhale carbon dioxide into the system. Algae compete with the fish for available oxygen in the water. Beware algae blooms

All Water Gardens Have Algae ... Suspended Algae Is Easy To Control and So Is Blanket Weed These Days

Koi ponds are usually closed recirculating aquatic systems, meaning that these systems, unlike natural ponds with streams flowing through them, lack a fresh-water flow-through source. Rather, closed re-circulating aquatic systems rely on filtration to purify and re-oxygenate their water. Outdoor ponds that are closed systems are subject to seasonal algae blooms and attached filamentous algae growth due to nutrient and carbon dioxide build-up. Increased levels of nutrients and carbon dioxide create the potential for a healthy algae population. I recently discovered a product made in the UK and shipped worldwide to individual pond keepers that not only controls algae including blanket weed but also digests carbonaceous nutrients that tend to build up on pond bottoms.

Planktonic Algae

Planktonic algae are waterborne single-cell algae most commonly referred to as Green Water. Planktonic algae usually occur (algae bloom) as the result of increased levels of nutrients and carbon dioxide in pond water, combined with the energy of sunlight. Planktonic algae can be controlled with aquatic plants, shade, ultraviolet sterilization or chemical methods. Using aquatic plants as an algae control requires that a specific number of mature plants are added to the pond to compete with the algae for the available nutrients and carbon dioxide. Shade is available only if foliage or a shelter inhibits the ponds exposure to sunlight. Chemical treatments can be successful, but they can be expensive, temporary and potentially harmful to plants and fish.

The most effective method of planktonic algae control is ultraviolet sterilization. The many advantages of UV sterilization make it a very attractive option for algae control. First, it is a physical treatment, so it does not change the water chemistry of the pond. Second, it is very easy to install. Third, the treatment takes place outside the pond, away from the fish and plants.

Practical Algae Control

View your pond as an ecosystem, one requiring you to manage it to maintain proper balance. Fish ponds without adequate plantings are most susceptible to algae bloom problems. These ponds are usually well stocked with overfed fish. The absence of aquatic plants eliminates competition with algae for available nutrients in the pond water. Practical fish stocking densities and feeding must be managed closely.

UV sterilization is a proven method for controlling waterborne algae. Combining sterilization with adequate mechanical filtration and operating the two properly is most effective in eliminating algae blooms and maintaining clear water. This combination will not, however, control nitrogen or carbon dioxide levels. Practical fish stocking densities and responsible feeding, along with routine filter and UV sterilizer maintenance play a big part in achieving a balanced system. Partial water changes (approximately 10 percent of the pond volume weekly with non-chlorinated water) will aid in diluting nutrients. Filamentous algae may grow and will benefit the pond by consuming nutrients and carbon dioxide. Responsible fish feeding will encourage the fish to graze on the filamentous algae, which is good in their diet. Filamentous algae may also be harvested and used as a fertilizer in gardens; remove it by hand or with a long bristle brush.

author Steve Zimmer Emperor Aquatics please visit his site

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• UV destroys algae by slowly passing the algae in front of the UV light.

• The clumps of dead algae are removed by foam sections in the filter ... these foam sections are easily cleaned

• The biological chamber contains Alfagrog or Supra in USA ... a superior biofilter medium. Here's wherethe water is purified

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