SiliconSolar, FountainFengShui and Pondepot all offer solar pond and solar fountain pumps and complete kits. Target offers a SunJet solar fountain pump for ponds at just $70.
There are several companies that manufacture and sale solar pond pumps. One of the best in the industry,and the one I would suggest is Smart Solar.
Yes, there are solar pond pumps available. You can find them at Pond Depot (http://www.pondepot.com/solarpondpumps.html) or Foster and Smith Aquatics (http://www.fosterandsmithaquatics.com/pond-supplies/solar-pond-supplies/ps/c/5163/14783). Amazon.com also sells pond pumps.
There are many brands of solar water pumps. Examples of solar water pump brands include Rule Rain, Smart Solar, Submersible, Wholesale Solar, and Dankoff.
Pond pumps must have an outddoor electrical outlet unless the unit is solar powered. To ensure its safe use, make sure the unit has a Ground Default Interrupter.
Dependent on size and quality you should be able to get basic models for as little as 40$ (e.g. the Instapark 5 head Solar Pump Garden). For a bit more (100$) you get better models such as the Solar Fountain 8 Watt Pond Water Pump. Basic solar pond pumps generally come in a price range of $ 40 to $100 depending on the brand and performance. A search in the online shopping sites yielded the following price range: 1.3-watt Solar Fountain Pond Water Pump-$57.99; Instapark 5 Head Solar Pump Garden Fountain Pond -$39.99; Smart Solar Sun Jet 150 Fountain Pump 2 stars (4 reviews)-$69.99; Solar Fountain 8-watt Pond Water Pump Panel-$95.99
form_title=Pond Pump form_header=Pond pumps can help you keep your pond well maintained year round. How large is the pond?*= _[50] Do you need to replace an existing pond pump?*= () Yes () No Do you need a four season pond pump?*= () Yes () No
Yes, in fact there are solar powered pond filters. This is a good idea to get, because it saves you money in the long run.
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You might buy a separate solar waterfall and Koi pond kit. Here are some good sources that sell the kits: WaterGardens.LumaGardening.com, ExoticWaterscapes.com and 123Ponds.com. You can also purchase pond kits at Target and Lowes. The Pond Digger Hybrid Koi Pond Kits from Exotic Aquatics is a good solar pond kit that meets the needs of a pond with Koi fish and your desire for a waterfall. You can call them at 800-522-5043 for a quote as they make the kit to your specifications. They have smaller kits that will also work and you can see them at http://www.exoticwaterscapes.com/pond-kits.php.
Yes, a pond pump would be a great way to keep the scum down. The pump basically works similarly to a pool filter, and will clear away dust, debris, and garbage.
The first solar pond in India (6000 sq. metres) was built at Bhuj. The project was sanctioned under the National Solar Pond Programme by the Ministry of Non-conventional Energy Sources in 1987 and completed in 1993 after a sustained collaborative effort by TERI, the Gujarat Energy Development Agency, and the GDDC (Gujarat Dairy Development Corporation Ltd).
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A Solar Pond collects and stores energy on a large scale in the bottom layer where there is dissolved salt. It can be used for water desalination, drying, and power generation. Apart from being cost effective, solar ponds can be used for reducing the consumption of fossil fuels and bring down pollution.