UV Clarifier| Green Pond Water| Rochester New York|NY
UV Clarifiers/Sterilizers For Ponds
In some Rochester, NY ponds, algae blooms, or "green water", can be a difficult issue to address safely and effectively.
A well balanced pond with aquatic plants, fish and filtration system rarely will have this problem but when you have tried everything else, or you do not have an ecosystem pond and you want to be able to see your fish again and clear up the green water, the UV Light Clarifiers/ Sterilizers are the way to go.
UV clarifiers and UV sterilizers: Two terms that are commonly heard in the world of water gardening and sometimes are surrounded by a veil of mystery and disapproval.
You ask some people and they say they are bad, you ask others and they say that they are good. Who is right? The truth is they are both right.
The general conception is that they do the same thing but this is far from the truth. Technically, UV clarifiers and UV sterilizers are the same thing in that they both contain all of the same parts, but where they differ is what they are used for.
UV Clarifier/Sterilizers 101
Since UV clarifiers and sterilizers are made from the same “guts,” let’s dive into how they work. In a nutshell, both units do their job using an extremely high output ultra violet bulb that is protected by a crystal sleeve. These bulbs are designed to emit light (energy) waves that are out of the spectrum of visible light.
So what does this mean? The particular wavelength of light that the bulb emits is harmful when it comes in contact with things around it. So when organisms such as bacteria, parasitic protozoa, and algae cells come in contact with the light from the bulb, their DNA is altered, ultimately causing harm and death to the organism. In essence, they are “nuked.”
Generally, bacteria and algae are pretty sensitive to UV light, and a short exposure is all it takes to “nuke” them. This would be a good job for a UV clarifier. Parasitic protozoa, like ich and costia, require a longer exposure time so the water would need to flow more slowly through the UV light, so a sterilizer is needed.
The longer the organism is exposed to the light, the more damage is done to it and that’s where the main difference between clarifiers and sterilizers lies – how quickly the water flows past the bulb, or how long the water and the organisms are exposed to the light.
Now let’s talk about things that affect the efficiency of the bulb. Generally speaking, although the bulb may still emit light, it is only effective at killing algae for about 8 to 12 months.
The cleanliness of the water and of the crystal sleeve also influence the effectiveness of the bulb - the dirtier the water and sleeve, the less the UV light will be able to come into contact with the nuisance organisms. To prevent sludge and lime build up, the sleeve can be cleaned with a mild detergent, followed by a rinse of clean water.
How They Work
Sterilizer VS. Clarifier
Everyone hates to have that dreaded algae bloom in their pond. If you own a water garden then you know your worst enemy is the unsightly scourge that is green water.
A well-balanced pond ecosystem rarely has problems with green water, but any water feature, when out of balance, might require you to resort to artificial means to control algae blooms.
This is where UV clarifiers come in handy. Their main purpose is to clear the water and get rid of those nasty algae blooms that cause green water. But remember, UV clarifiers only get rid of the single-celled, floating algae. It does not get rid of other forms of algae such as string or blanket algae.
Sterilizers, on the other hand, do exactly that. They sterilize. Commonly used in the aquarium industry and fish husbandry as another line of defense in preventing major parasite and bacteria outbreaks, they are designed to get rid of and kill just about everything in the pond water.
To accomplish this, they need to have a longer contact time with the water. Sterilizers require extremely slow flow rates compared to clarifiers. So, if you want to make sure you zap everything in your pond, then this is the way to go.
You also should be aware that UV sterilizers cannot be used with certain medication applications because in addition to the effect it has on bacteria and parasites, it can have a similar effect on the makeup of certain medications, often times rendering them useless. So a good rule of thumb is that the sterilizer be removed or turned off when medicating.
Where do these fit with the general hobbyist? A lot of hobbyists use sterilizers on a smaller scale, in the 9 to 24 watt range, in their own quarantine tanks. Whether you choose a UV clarifier or sterilizer, it should be installed in-line after the skimmer or other mechanical filter, pre-filtering the water to keep the unit from coming in contact with heavy debris.
For Installation of your UV sterilizer or clarifier, we need to know two things to help decide which unit is appropriate for your pond – approximately, how many gallons of water does your pond hold and what do you want the UV to accomplish? Clarifiers and sterilizers definitely have their place in the hobby, but they are only helpful when used in the correct application. Knowing when and how to use them can save you from a lot of headaches and let downs that result from improper application. Certified Aquascape Contractor of Rochester, NY can help you with the installation of a UV Clarifier/Sterilizer, contact us today!
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Landscape Designer / Pond Contractor, Tom Warmerdam has been designing, installing & maintaining koi ponds, water features, patios, landscape lighting & creating outdoor living area paradises all around Rochester, New York (NY) for over 30 years. His company Acorn Ponds & Waterfalls was awarded by Aquascape Inc. as one of the top 100 in North America in 2014. He has been attending conferences at Aquascape headquarters every year since 2004 in Chicago, Ill to maintain his Certification(Certified Aquascape Contractor) status.