Filed under: Solar Products. Tagged as: solar pond pump, solar pond pumps, solar pond pumps kits, solar power pond pump, solar powered pond pump, solar powered pond pumps, very small pond pump.
Warning: file_get_contents(https://webservices.amazon.com/onca/xml?AWSAccessKeyId=AKIAJY2QOYGNZ4U33GHA&AssociateTag=thesolpowexp-20&IdType=ASIN&ItemId=B0018S7X0S&Operation=ItemLookup&ResponseGroup=ItemAttributes%2CImages%2COffers%2CReviews&Service=AWSECommerceService&Timestamp=2017-04-28T21%3A50%3A11Z&Version=2011-08-01&Signature=n1et4G08BW5x12EAKhSZyf8NnXlY%2BdcIMGwLHiONvrs%3D): failed to open stream: HTTP request failed! HTTP/1.1 400 Bad Request in /home4/sanjuan/public_html/thesolarpowerexpert.com/wp-content/plugins/amazon-product-in-a-post-plugin/inc/aws_signed_request.php on line 376
In concert with solar powered fountains, there has been a huge proliferation of solar pond pumps and solar pond pump kits. If you are confused by the difference, solar powered fountains are complete, ready to go units. Solar pond pumps are used to replace traditional pumps used in ponds and other large water ornaments.
If you are looking for a solar pond pump to replace your existing pump, or simply to add a new water feature to your pond, then you’ll need to be sure that the solar pond pump, solar panel, and batteries are all properly sized to one another. There are many solar pond pumps kits on the market to simplify this process, but many of the cheaper kits include a very small pond pump which are often not properly sized.
Sizing the Solar Pond Pump
Start with the power rating of the solar pond pump. I’ll assume that you already have an idea of how many gallons per minute or per hour you need. For instance, a common low-budget solar pond pump is a 6 volt, 45 gallon per hour pump. These are used in birdbaths and small ornamental solar powered fountains. For a larger pond, you would probably want to go with an 18 volt, 200 gallon per hour solar pond pump.
Sizing the Solar Panel
Once you have the solar pond pump specified, you need to check and make sure the solar panel is properly sized. This is where unscrupulous manufacturers of solar pond pump kits will skimp. A solar panel’s rated voltage needs to meet or exceed the solar pond pumps rated voltage. Additionally, the power rating for the solar panel should be two to three times higher than the power rating of the solar pond pump.
For example, if your pump is rated at 2.5 watts, the solar panel should be rated at 5 to 7.5 watts. The reason for this is because the solar pond pump is rated at the power level that it takes to operate correctly. The power rating for the solar panel represent the maximum power output it will produce in full sunlight. These power ratings are quite different.
Sizing the Batteries
Batteries are not completely necessary for a solar pond pump. However, they will make your solar pond pump run much better. Another reason that you want the solar panel to be rated two to three times higher than the pump is because you’ll want the extra power to get stored into the batteries.
While not technically correct, a good rule of thumb for properly sizing the batteries is to multiply the batteries voltage and amp-hour (AH) capacity to determine how long they’ll run the solar pond pump. For example, if your solar pond pump is rated at 6 volts and 2.5 watts and the batteries that come with it form a 6 volt 1 amp-hour (or 1000 mAH) battery, then the batteries have:
This means they should run your solar pond pump for:
They won’t actually run it for this long, but this gives you a ‘theoretical’ maximum run time on the batteries.
As a final thought, be sure to read my comments on the warranty for solar powered fountains. The same concerns apply to solar pond pumps.