Do experienced ppl use UV sterilizer? - The Planted Tank Forum
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post #1 of 10 (permalink) Old 08-31-2017, 09:13 PM Thread Starter
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Do experienced ppl use UV sterilizer?

I added on to my tank five days ago and I'm amazed.

The water had gotten progressivly murky (hi tech / EI) until I realized it was cloudy, then it accelerated. IDK, if it was bacterial or algae bloom. Now it is gone.

Is this an indication of problem with tank/lighting/ferts, or do experienced people use them on occasion?
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post #2 of 10 (permalink) Old 08-31-2017, 09:39 PM
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If it looked greenish it was algae.. If it looked like smoke it was bacterial..

Never had an algae bloom (knock on wood) but I am low fert/low CO2 kind of guy.
Had bacteria once in a heavily planted tank.. Generally goes away on its own. just need to watch O2 levels (via fish/snails).

Certainly no harm in running UV..just never really needed it.
Oh I'm not what I call real experienced but had enough annoying problems over time to not be a newby..

What ever problem you had is probably gone..
Your PH change lately?
New tank?
Dirted?


More info might help.

"A man with a watch knows what time it is. A man with two watches is never sure."

Last edited by jeffkrol; 08-31-2017 at 09:42 PM. Reason: edit
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post #3 of 10 (permalink) Old 08-31-2017, 10:19 PM
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I have a heavily planted high tech tank. Occasionally I tend to over fertilize, which is not hard to do when you do EI dosing. If I get an algae bloom in the water I hook up my Green Killing machine 9watt U.V.
I leave it 27/7 for a week & its cystal clear again. Everyone gets algae at one time or another. Its not a big deal if yoy know how to deal with the issue that caused it imo.

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post #4 of 10 (permalink) Old 09-01-2017, 12:40 AM Thread Starter
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Originally Posted by jeffkrol View Post
If it looked greenish it was algae.. If it looked like smoke it was bacterial..

Never had an algae bloom (knock on wood) but I am low fert/low CO2 kind of guy.
Had bacteria once in a heavily planted tank.. Generally goes away on its own. just need to watch O2 levels (via fish/snails).

Certainly no harm in running UV..just never really needed it.
Oh I'm not what I call real experienced but had enough annoying problems over time to not be a newby..

What ever problem you had is probably gone..
Your PH change lately?
New tank?
Dirted?


More info might help.
It was brownish/whitish. It wasnt green-green, but someone might consider it brownish with a slight green tint. Idk. Water params were perfect, doesnt that rule out bacterial?
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post #5 of 10 (permalink) Old 09-01-2017, 12:46 AM
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I run a DE filter 24 x 7 x 365. It filters out free floating algae from the water stream, bacteria, fungus, parasites and any particle down to about .5 microns.

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The DE filter is the cartridge filter down in front.
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post #6 of 10 (permalink) Old 09-01-2017, 03:42 AM
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Originally Posted by ChrisX View Post
It was brownish/whitish. It wasnt green-green, but someone might consider it brownish with a slight green tint. Idk. Water params were perfect, doesnt that rule out bacterial?
Not really...
Crystal Clear Aquarium Water
or..
Quote:
I have a bacterial bloom in my 40 gal tank that has lasted 5 weeks so far with no signs of clearing up (white milky water). The tank has been established since 7/2014 and had been fishless cycled. Water used to be perfectly clear.

Ammonia/Nitrite/Nitrates are 0/0/5 respectively. I started doing 20% water changes weekly for the first few weeks of the bloom. Now I've been doing 20% water changes every couple days. Still no improvement.

There are no dead fish and I've been vacuuming the substrate with every PWC.
https://www.thespruce.com/bacterial-bloom-1380092
Quote:
Heterotrophic Bacteria - Bacteria that cannot synthesize its own food and is dependent on complex organic substances for nutrition.
The bloom can spike ammonia a bit but from the few I've had w/ a large plant mass and a well colonized filter I never noticed it..
What the bacteria eats you don't measure..
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post #7 of 10 (permalink) Old 09-01-2017, 03:47 AM Thread Starter
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So it was bacterial...and the uv works!

Idk how else to clear up bb.
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post #8 of 10 (permalink) Old 09-01-2017, 04:01 AM
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So it was bacterial...and the uv works!

Idk how else to clear up bb.
Well, MAY have worked..
I'm POSITIVE it didn't hurt..
72hrs is a fairly common long "limit" to a BB...and when it stops.. it's gone really gone, like bam clear..

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post #9 of 10 (permalink) Old 09-01-2017, 01:33 PM Thread Starter
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This took 5 days to clear. The water was cloudy for 3+ weeks. There was no 'bam'.
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post #10 of 10 (permalink) Old 09-01-2017, 03:04 PM
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I might first try larger more frequent water changes immediately, and or clean the filter to see if this helped.
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