When is UV a good idea/bad idea?

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dr_sudz

Jack Dempsey
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Mar 6, 2006
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What size of tank is good to have a UV filter on? I know that they kill all bacteria flowing through the filter, so would this not kill everything breaking down the amonia at the same time? I was thinking of putting one on as a filter to a wet/dry filter, post trickle, Im just a little nervous about using one if its doing too good of a job and thus causes harm to the fish. What are your thoughts?
 
dr_sudz said:
What size of tank is good to have a UV filter on? I know that they kill all bacteria flowing through the filter, so would this not kill everything breaking down the amonia at the same time? I was thinking of putting one on as a filter to a wet/dry filter, post trickle, Im just a little nervous about using one if its doing too good of a job and thus causes harm to the fish. What are your thoughts?
the good bacteria will be living on a substrate ( filter media, bio media, sand etc) not in the water.uv wont bother them.......the exception would be for start up when ( if) you add a starter culture to the water.
 
What does the UV distroy and is it beneficial if you were to run it with a wet/dry? Does it distroy Nitrates in the water column? I know its pretty good but Im just not sure if it becomes too much when running on a tank.
 
dr_sudz said:
What size of tank is good to have a UV filter on? I know that they kill all bacteria flowing through the filter, so would this not kill everything breaking down the amonia at the same time? I was thinking of putting one on as a filter to a wet/dry filter, post trickle, Im just a little nervous about using one if its doing too good of a job and thus causes harm to the fish. What are your thoughts?
many ppl dig UV's i would only use one in a out door pond myself...i would never put one on my reef there is just no neeed for it, they cost to much all ways around Fostermith they would be happy to sell you one but even they would not use em
 
UV has helped me totally control a water-born algae problem. As far as good bacteria, there should be plenty in your filters and substrate, not floating around in the water.
 
rottbo said:
i am thinking of putting one on my bigg indoor pond to help keep it crystal clear UVs also help control algae

works great on my pond! esp. in the summer given the increase in sunlight!:grinyes:
 
I recently put one on the return line from a Rena XP-3. Water looks cleaner, and I am seeing a lot less algea on the rocks. Seems to be a help, don't think there is any drawback to having one, other than the cost, which wan't to high.

Chris
 
Let's get one thing straight here that alot of people keep wondering about. The U.V. light is installed on the outlet of your filter system. It will not harm any biogical bacteria in your media, filters, rocks, wet dry etc. The only time you would not use it is in the first month of a new tank cycling because it would take forever for your good bacteria to build up in your filter media and substrate as they are free floating. But once your tank has been cycled and has established a good bacteria in your media a U.V. system will not harm them as they will never be exposed to the U.V. light because it is on the output side of your filter system. If you can afford one then I recommend them.
 
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