UV Sterilizer Question

[banzaikid1]

I heard that running a uv sterilizer all of the time will weaken the immune system of my fish. I was just wondering if this was true or not.
Thanks

 

[sweeTang21]

the facts behind this are that they take out all the good bacteria from the water, causing the tank to be unstable and in the long run hurting your fish. i honestly have yet to see any hard core proof of this. i read that in a magazine so not my true input but im not sure i would argue this point all the much, considering i have no clue!!

 

[ewurm]

My understanding is that since your fish have no harmful bacteria or parasites in the water, their immune system becomes weak because they aren't using it.

 

[maxxximus87]

Ive had one running on my 75 for 2 yrs, and my fish are colorful robust and healthy. I have a UV sterilizer rated for 250 gallons on it also which i was told will kill internal parasites if the water passes threw it slower, and so far has proven true as far as i can see. Ive also sold and traded fish and I know they are still alive and healthy in tanks without them. Its controversial, but from my personal experiences i dont see why you would not want a tank with crystal clear water and free of disease(Not one of my fish has been sick since Ive had it litterally) just my 2 cents....

 

[Buckdog]

Check out these two articles:
www.****************/information/uv_sterilization.htm
www.koivet.com. Look under "Articles" in "Misc"for UV.

On my tank I "burn" (UV) my water 3 times a week for about 2hrs. The water is excellent. I'm planning on lessening the burn time in the future.