Question - Do I need a UV light in my pond?

Answered by: Tina Martinez  |  Category: General  |  Last Updated: 17-06-2022  |  Views: 1349  |  Total Questions: 11

For new ponds with enough plants and without an extreme amount of fish: If your pond is brand new and has the green pea soup problem, all you might need is some patience. But for ponds without many plants and with a lot of fish, a UV light is most probably recommended from the start. UV lights work when water from your pond is pumped through their light path. The single-celled, free-flowing algae within your pond water is then exposed to these high levels of ultraviolet light. This light destroys their DNA and kills them. Follow our 7 tips below to help keep your pond water clean! Maintain a healthy fish population. Don't over-feed your fish. Create a proper balance of plants. Choose the right size pump for your pond. Clean debris from pond before it has a chance to decay. Choose proper filtration for your pond. Once fully mature, you should notice a difference within one week of turning the U. V. C. on and full clarity should be achieved in two weeks. For maximum effectiveness, you should change your UV bulb at least once a year, such as when you perform your pond's annual spring cleanout. If you've recently changed your bulb and your water is still turning pea soup green, you might need to simply clean off debris that has built up on the bulb itself.

https://homeguides.sfgate.com/uv-light-kill-beneficial-bacteria-pond-102757.html

UV affects both good and bad bacteria by damaging the DNA in the bacteria, resulting in death or the inability to reproduce. The bacteria must pass directly in front of the UV lights or they aren't affected. Any bacteria floating freely in the pond water are eventually exposed to the UV wavelengths and destroyed.

https://www.turpinlandscapedesign.com/underwater-pond-lights-harmful-fish/

Underwater Pond Lights create a whole new experience for you to enjoy your pond after the sun goes down. These Underwater Pond Lights are safe for your fish and they will not harm them. You will even notice that your fish actually love to swim over, around and even under these Underwater Pond Lights.

https://www.aquanooga.com/Articles.asp?ID=258

UV provides 100% success for achieving clear water from single cell algae in a pond. While UV will provide clear water it does not filter the pond water. One concern of using UV in a pond is that some people will look at their perfectly clear pond and think that the water quality must be good for the fish.

https://animals.mom.me/can-uv-light-harm-goldfish-11434.html

The UV acts as a water sterilizer, killing bacteria and algae. Although generally beneficial, UV light can be harmful in doses that exceed the natural amount of light a wild fish would receive.

https://www.bradshawsdirect.co.uk/fish-food/pond-treatments/green-water-treatments

If there is a lot of sunlight and your pond water is rich in nitrates algae will multiply rapidly. Green water is most effectively removed by using a UV Clarifier in conjunction with a filter, however sometimes you need to give things a boost by using an additional pond treatment.

https://www.pubs.ext.vt.edu/420/420-250/420-250.html

Muddy, cloudy water is not only unattractive, but can be harmful to aquatic life. Although high sediment loads in ponds seldom kill sport fish directly, muddy waters can seriously reduce fish production. High suspended sediment loads in ponds can result in the following problems: Reduced visibility and fish growth.

https://pondclearproducts.com/crystal_faq.htm

You should use tap water, NOT POND water to mix your Crystal powder. NOTE: DO NOT USE WATER THAT HAS BEEN PROCESSED THROUGH A WATER SOFTENER AS IT CONTAINS SALT. How long does it take to work? Within 30 minutes the Hydra Crystal will start clearing your water - a large water body will take about 24 hours to clear.

https://premierpond.com/long-take-build-backyard-pond/

So, How Long Does It Take To Build A Pond? 4 days for the average size pond.

https://blog.thepondguy.com/2015/05/23/how-often-are-you-really-supposed-to-wash-out-your-filter-dec

Cleaning the mechanical filter is easy. You simply remove the mat or debris net/basket, dump out the debris and rinse it with a garden hose. This can be done as often as you like or as needed when you see the water flow slow down.

https://www.pondfiltration.com/files/HelpfulHints.pdf

It is “normal” during this time to clean the element twice a week. After the first 6 weeks, with the pond water at 65 degrees or warmer, the filter bag should be cleaned once a week, unless there is dirt on the bottom of the pond from plants tipping over, or the fish have kicked out the gravel while trying to spawn.