uv lamps

Anyone kno anything about uv lamps in filters. The advice is always to
replace them each year, but mine is chrotling merrily through its third year
and the pond is perfectly clear.

Do uv lamps deteriorate slowly or just stop? Is there any reason to replace
them beyond giving profit to lamp makers?

cheers

Jon

"Oxymel of Squill" wrote in message
news:GkF0c.1436$vY.486@newsfe1-win...
Anyone kno anything about uv lamps in filters. The advice is always to
replace them each year, but mine is chrotling merrily through its third
year
and the pond is perfectly clear.

Do uv lamps deteriorate slowly or just stop? Is there any reason to
replace
them beyond giving profit to lamp makers?

cheers

Jon



I go by the old adage "if it ain't broke, don't fix it".

Hi,
If your UV has been running for three years it is not effective any more.
The fact that the light still glows is not a factor. They lose their
effectiveness gradually as time passes losing, IIRC, about 60% in the first
9 months. The good news is that your water is clear. I would not replace the
bulb at this time. IMHO UV clarifiers are usually not required.
To reply personally remember no "NEWS" is good.

"Oxymel of Squill" wrote in message
news:GkF0c.1436$vY.486@newsfe1-win...
Anyone kno anything about uv lamps in filters.
snip

Actually you are better off without a UV clarifier. UV light kills harmful
bacteria's and thus, kills all bacteria's. Including beneficial bacteria's.
Beneficial bacteria is required in any pond to keep proper balance between
fish, plants and water. Beneficial bacteria starves algae from growing in
your pond while UV kills everything. You don't see UV lights used in lakes
ponds and creeks in nature. Why is that? They have a balanced ecosystem!

Brian



"Oxymel of Squill" wrote in message
news:GkF0c.1436$vY.486@newsfe1-win...
Anyone kno anything about uv lamps in filters. The advice is always to
replace them each year, but mine is chrotling merrily through its third
year
and the pond is perfectly clear.

Do uv lamps deteriorate slowly or just stop? Is there any reason to
replace
them beyond giving profit to lamp makers?

cheers

Jon