Shelf life of UV bulb

do they seriously degrade, or do they keep working so long as they light up?

cheers


"~Roy~" wrote in message
...
The bulbs

No, they degrade over time.........Its no different with ther UV
lights in a UV used in the pond or the UV's used in hot tubs and spas
to kill bacteria........over time the bulb does degenerate. We have a
UV on our hout tub, and you can tell when its getting to the point of
needing to be replaced. Id you look at most any manufactuers info,
they spell it out that most bulbs will have a lifespan of usefullness
for about 3 years time, before needing replacement..........we have
seen this first hand wtyh the hot tub. The substance in the bulb over
time of being charged electrically and with the heat inside the bulb
causes it to degrade............So even if the bulb lights up it does
not mean its still good if its around 3 years of age........(actually
that figure is if the bulb is kept on for 3 years continous useage) so
mileage in a pond or aquarium may vary........as a hot tub is usually
left on 24/7/365

On Wed, 8 Jun 2005 09:17:22 +0100, "Oxymel of Squill"
wrote:

===do they seriously degrade, or do they keep working so long as they light up?
===
===cheers
===
===
==="~Roy~" wrote in message
et...
=== The bulbs
===


==============================================
Put some color in your cheeks...garden naked!

~~~~ }((((o ~~~~~~ }{{{{o ~~~~~~~ }(((((o

"Oxymel of Squill" wrote in message
eenews.net...
do they seriously degrade, or do they keep working so long as they light
up?
==========================
It is said they degrade but I saw no lessening in the power of mine over the
3 year period we used them. You must clean the inner sleeve or they will
not be effective. Slime and minerals build up on the sleeve preventing the
UV radiation from working.
--
McKoi.... the frugal ponder...
EVERYONE: "Please check people's headers for forgeries
before flushing." NAMES ARE BEING FORGED.
Do not feed the trolls.
~~~ }((((o ~~~ }{{{{o ~~~ }(((((o

In continual use, they will have a serious drop in output over a years time
and need to be replaced. In storage, I don't believe they degrade. If they
are used only for a month each year, at the start of the green water season,
then they are usable for a few years, but they will be weaker each year.
--
RichToyBox
http://www.geocities.com/richtoybox/pondintro.html

"Oxymel of Squill" wrote in message
eenews.net...
do they seriously degrade, or do they keep working so long as they light
up?

cheers


"~Roy~" wrote in message
...
The bulbs

Still no change....I think im going to disconnect it.

"robv60" wrote in message
oups.com...
Still no change....I think im going to disconnect it.
=====================
Why disconnect it unless you can return it? I'm sure they will not take it
back unless you can prove it's defective. Before giving up on it try and
find where the N and P are coming from that's feeding this algae. Or as
suggested before, cover most of the pond with some kind of sun blocking
device to allow the UV to catch up - then uncover the pond. Meanwhile try
and find where all the algae "food" is coming from.
--
McKoi.... the frugal ponder...
EVERYONE: "Please check people's headers for forgeries
before flushing." NAMES ARE BEING FORGED.
Do not feed the trolls.
~~~ }((((o ~~~ }{{{{o ~~~ }(((((o