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Discussion Starter · #1 ·
With all the equipment available to us for aquariums, wouldn't the UV sterilizer be on the top of the list? It kills bacteria, lessens algae considerably, and kills parasites. Many cloudy tanks are complained about on PT, but few mention a UV sterilizer for a fix. It is not impossible for bacteria to enter your water supply from your tap or directly from the air into your aquarium. If you have a cloudy water issue, wouldn't a UV sterilizer be your first choice?

Spend money on a UV sterilizer. I have the 'Green Killing Machine 9watt for 29g and smaller, and 23 watt for 55g, which creates the perfect amount of flow in my tank, while killing nasties. Cloudy tanks due to bacterial blooms are a thing of the past. But it does take a few days once the bacteria or green water has infected your tank to be completely cleared up by the UV.

There are many types of UV for aquariums that will fit your needs. Get one and see your cloudy water days disappear.
 

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If you have multiple tanks, 1 UV *might* be worth the investment. I have a 9w TurboTwist collecting dust. I used it exactly once in about 5 years, mostly to learn what it does and how to use it. My personal conclusion is that it is a good addition to a bare QT tank.

As any specialized tool, it does its job within a narrow band of parameters a) whatever you are trying to kill has to be in the water column b) it has to be exposed to UV for a minimum amount of time (contact time) c) your entire tank's water has to pass through the UV. A stand alone unit hooked to a pump with gph appropriate to the UV's power rating is the the only configuration that makes any sense to me personally.

The claims that UV kills bacteria and parasites and algae are a bit misleading as each organizm requires different contact / exposure times for erridication.

Treating the symptoms instead of the cause usually results in the symptoms reoccurring. When it comes to green water and milk water, I would rather learn what it is, what conditions cause it, and fix that instead.
 
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Got by without one for nearly four decades.
Bacteria bloom is what it is to me, and part of a tank maturing.
Save my money for fishes,shrimps,plant's.
I might be tempted if I had ever had green water, but have not ever seen it in my tank's (knocks wood).
Parasites and bacterial pathogen's are dealt with in quarantine with appropriate med's I hope.
 

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There are many types of UV for aquariums that will fit your needs. Get one and see your cloudy water days disappear.
Do you write ads for a living. :grin2:

All kidding aside certainly it's not a must, but many swear by them. It does give you water that extra bit of clarity that sometimes you have to look twice to see if there's water in it.

If you look at the saltwater side, pretty much everyone uses one since the fish are a bigger investment and it's a proactive approach to prevent disease.

On the planted side, "if it ain't broken" usually applies since it's more about GW algae issues than preventing ich or something else.
 

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I haven't needed it for 7 years now suddenly I find myself needing it.
Just ordered a new filter with it and a stand alone unit for use in various tanks.
Guess it's like a spare tire or a handgun.
You never need it till you do.

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...

If you look at the saltwater side, pretty much everyone uses one since the fish are a bigger investment and it's a proactive approach to prevent disease.

...
While there are people that use UV on SW systems, it's somewhat rare today, except for a large multi tank installation like you would find in an LFS.

It takes a heap of UV to kill diseases, compared to algae control. UV will also kill off all plankton, which in a reef system can be very desirable.

In general for both SW and FW I'd say use UV only when you have a specific problem that UV will solve, otherwise, you don't need it.
 

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I'm under no illusion that the 9W and 13W respectively units I ordered are going to kill diseases or even many organisms.
Between the low wattage and high flow rate I would doubt they would be even lightly successful.
But against this blasted sudden attack of greenwater, that after 7 years I suddenly and inexplicably I have and cannot seem to get rid of despite massive amounts of water changes, well that according to YouTube and various members here as well, THAT they should handle :)
 

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Discussion Starter · #10 ·
I believe an internal UV (hung in tank) is a better alternative for flow than a powerhead (if a powerhead is too strong, and a bubbler too light). So you can pay 35 dollars or more for a powerhead that pushes water, or you can pay 45 dollars or more for a UV light that pushes water more gently, and it serves more purpose. My 23 watt Green Killing Machine pushes just the right amount of water for my 55g (very low current). In a 10 gallon, the 9watt works to create easy movement perfect for fish that don't like stronger currents.

I don't like one trick ponies.:wink2: I prefer a piece of equipment that has multiple uses, if I'm putting out the money.
Although, a UV needs to be replaced once a year, where a powerhead will last much much longer.
 

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I believe an internal UV (hung in tank) is a better alternative for flow than a powerhead (if a powerhead is too strong, and a bubbler too light). So you can pay 35 dollars or more for a powerhead that pushes water, or you can pay 45 dollars or more for a UV light that pushes water more gently, and it serves more purpose. My 23 watt Green Killing Machine pushes just the right amount of water for my 55g (very low current). In a 10 gallon, the 9watt works to create easy movement perfect for fish that don't like stronger currents.

I don't like one trick ponies.:wink2: I prefer a piece of equipment that has multiple uses, if I'm putting out the money.
Although, a UV needs to be replaced once a year, where a powerhead will last much much longer.
I agree it looked like a great piece of equipment but since I was also needing a bigger filter my budget necessitated my choice.
I did indeed seriously consider the Green Killing Machine.
Just given the budgetary constraints and the fact I am very tired of looking at a green mess I made the choice I did :wink2:
 
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I haven't needed it for 7 years now suddenly I find myself needing it.
Just ordered a new filter with it and a stand alone unit for use in various tanks.
Guess it's like a spare tire or a handgun.
You never need it till you do.
Sent from my VS985 4G using Tapatalk
I know this is an old thread, but which unit did you get? A Green Killing Machine, or something else?

Anyone have experience with the SunSun UV filters, and how they compare to the GKM?
 

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13W no name in tank power head model.
I moved and that cured my apparent water issues allowing the bloom.
But until I moved the 13w no name ebay unit did the job on the green water.
I have a big sunsun filter with a 9w in it I think it didnt do much good but the stand alone in tank model destroyed the green.

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No idea they blocked your link.

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Well that's annoying--hard to know exactly what we're talking about, and a picture is always worth a thousand words.....

So the 13w no-name sterilizer that pops up on ebay is identified in the description as: JUP-23 UVC sterilizer, an upgrade from the older model JUP-01 by SUNSUN with new feature of ADJUSTABLE FLOW RATE.

Is that the same? It's only $32, $36 with an extra UV bulb, so a good deal if it works as advertised.

Thanks
 

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I have a cheap hang on tank Ebay unit. I used it twice for green water until, I realized I created the problem by disturbing the entire substrate. Since then, I disturb no more than 1/3 of the substrate at time. So, the UV has been on the shelf for years now. The UV is so big an ugly, I used it only when necessary.
 

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Well that's annoying--hard to know exactly what we're talking about, and a picture is always worth a thousand words.....



So the 13w no-name sterilizer that pops up on ebay is identified in the description as: JUP-23 UVC sterilizer, an upgrade from the older model JUP-01 by SUNSUN with new feature of ADJUSTABLE FLOW RATE.



Is that the same? It's only $32, $36 with an extra UV bulb, so a good deal if it works as advertised.



Thanks
Yes. That would be the correct one.

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You can post the auction or listing number.

We automatically exclude fleabay links because too many people were promoting their own items.
Gotcha. Thanks for the explanation about the issues with Fleabay. Knew I'd seen links to other sites, so that seemed kinda random. Makes sense now.

Yes. That would be the correct one.

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Glad to know these cheaper ones worked on green water--will give it a shot when I'm back again in a couple of weeks. Wanna finally be able to see inside my tank again LOL
 
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