Will A UV sterilizer Guard Against ICH?

GuZZiZZiT

the geek shall inherit the earth
Oct 4, 2006
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Wisconsin
I know a UV sterilizer is used mainly to prevent Alge Blooms, but i've read some articles that say they also work against fish disease as well.

If so, would a 36 watt unit be big enough for a 125 gallon tank?
 
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I am not the expert on UV sterlizers, but I have one for my SW tank, and never hooked it up YET. (I am getting around to it! :) )

I wouldnt be sure fi it can rid a tank of freshwater Ich. Saltwater Ich and Freshwater Ich are two totally different things and only related by name and their appearance on fish but I wouldn't know if they are both susceptible to UV light as far as it killing them off or not.

I know in a freshwater tank, you can do some pretty easy things to avoid Ich. I learned a couple months ago that the LFS was wrong in telling me that it is always present in a fishtank, but rather it has to be brought to the tank from a host. So, if you were to quaranteen all your fish, or dont have a problem with Ich now and are not planning on stocking further, I wouldn't waste too much money on a UV, but that is just my opinion. Algea blooms in freshwater are also pretty easy to avoid so I think that is why people do not usually need to have a UV sterilizer on a FW tank. I think they also add heat to the water, which is why I am leery to put mine on my SW tank since it runs hot by itself already, and so you could have a temp problem in your tank.

For my 90 gallon tank, I was advised by a few people and resources on the internet to get a 110 watt system so I dont know if 36 watt would be good enough for your tank. You would need more intensity to filter water faster through it, so that is why I believe the wattage comes into play. Also, keep in mind that it is nearly impossible to filter all your water through it in a FW tank because you would need some considerable water flow (somewhere in the range of two to three times the volume of your tank per hour) which most FW are just not used to or can adapt to quickly.

So, sorry for the wishy washy answer...I dont have exact advice or info for you, but logically thinking, I dont know if it would really be worth your time, effort, or money.
 
Freshwater ich has three phases in it's life cycle. One is eggs, down in your substrate. Uv filter is not likely to get these. Second is a free swimming version, that goes and looks for a host fish. A UV filter will get some of these out of the water but it's not likely to get them all. Third phase is what you see on your fish. Parasites eating, breeding, and dropping eggs which wind up back in your substrate.

A filter in your water that kills some of the free swimmers will help, but having unstressed, healthy tanks with good fresh water is the best defense.
 
UV lights pretty much kill only bacteria and other unicellular life forms like algae in algae blooms. Ich is a parasite visible to the naked eye and too big to be affected.
 
wataugachicken said:
UV lights pretty much kill only bacteria and other unicellular life forms like algae in algae blooms. Ich is a parasite visible to the naked eye and too big to be affected.


After further research, I would have to disagree with this (sorry)and am sure that UV sterilizers can kill ich and parasitic protozoa in any type of water, salt or fresh. Check out this link where about half way down there is a section called "What can be eliminated by a UV sterilizer".

Still, I do not think that is would be worth a lot of money for you because there is a lot of things you can do to avoid ich.
 
that's good to know then, but i agree that keeping a clean tank and properly QT'ing new fish is the best defense.
 
Well, thanks guys, you've given me lots of things to think about. The reasone i'm interested is i just lost my 2 clown loaches to ICH last night. I was shocked by how fast it killed them. Before i went to work they were both swimming around, loaching it up, but when i got home they were both laying on the substrate gasping and covered in tiny white speckles. I started a heat and salt treatment but within a couple hours they were both dead. None of my other fish seem to have it, but i'm not takeing any chances. I'm gonna continue the treatment for 2 weeks just to be safe.
 
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