Seven Most Asked Questions About UV Pond Filters

1. Is an ultraviolet light Filter? Yes, as far as the definition of Filter goes. A filter is a device that removes unwanted material from liquid, gas, light or sound. Ultraviolet light removes harmful bacteria such as pathogens from the water. In the case of algae or planktonic spores, the UV light would act more like a transformer than a filter. The UV light transforms the live algae spores into dead algae spores; it does not filter them out.

Seven Most Asked Questions About UV Pond Filters

Seven Most Asked Questions About UV Pond Filters

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Seven Most Asked Questions About UV Pond Filters

Seven Most Asked Questions About UV Pond Filters

2. Do I need an ultraviolet light in my pond? Some ponds need a UV light and some do not. If you have a small pond with a few guppies or mosquito Fish, and it is 50% covered with hyacinth, water lettuce, or lilies, and it is being aerated by a fountain or waterfall, the answer is: No! If you have many Fish, few plants, and acheap bio-filter, yes, UV light would help a great deal. Most large ponds of 20.000 gallons or more tend to be more biologically stable and nature's hydrogen cycle keeps everything in check.

3. Does the UV light kills beneficial bacteria? You probably ask that question because some liner pond guy told you, or you read it on his website, that it does. Well, it does not. Beneficial bacteria are not floating around with the algae spores and pathogens. Aerobic and anaerobic bacteria, nitrobacter, and other bacteria are busy working and doing what they do. They live on the surface of things in the pond and in the rotting debris on the bottom of the pond, breaking down nitrites into nitrates and nitrogen, and breaking down ammonium into ammonia gas. Ultraviolet light does, however, killthe microscopic animals such as the rotifers and daphnia which each planktonic algae ("pea soup" algae). However, the UV light is taking care of those too, anyway.

4. What size should I get? Ultraviolet lights are sized by watts and the number of watts you need is determined by the size pond you have. You should move the enTire volume of the pond through the filter and UV light at least every three hours, and ideally every 1.5 hours. If you have a 1000-gallon pond, you need a 1.500 gallon per hour pump. So you would need to get a UV light that is rated to handle 1.500 gallons per hour passing through it.

5. Which is the best UV light to purchase? Do your homework. Do not just compare the prices of the units. Compare warranties and replaceMent bulb prices. Find out theflow rates and the amount of time that water is exposed to the UV light. What is the lamp life rating? Is it U.L. listed? Is it made of UV resistant materials? Is the power Supply easy to disconnect? Is the lamp easy to remove? Does it have a lamp lens wiper so it can be cleaned without taking the fixture apart? Is the transformer located on the cord and not on the UV light body? Does it come with unions for easy disconnection from the system for maintenance? Buy a model that has the clear inspection cap so you can see at a glance if the lamp is working.

6. Where do I install the UV light in the system? The UV light should be installed after the bio-filter. This way, you are running filtered water through the fixture and it will stay clean longer.

Seven Most Asked Questions About UV Pond Filters