"~ jan" <> wrote in message
news:...
> On Sun, 18 Mar 2007 15:25:48 CST, "Jim Hurley" <>
> wrote:
>
>>Continued use of a functional bulb makes sense to me.
>>
>>Would there be any device that would allow us to assess how good or bad
>>our
>>bulbs are? I would hate to throw one out with 75% efficiency. For that
>>matter 20% if it still handled the load in my pond, why change it? Maybe
>>that is the best answer. If it works, don´t change it. Tho somewhere the
>>cost of running and inefficient bulb must come to the price of replacing
>>it .
>>
>>Does anyone have an idea how to assess the efficiency and cost factors?
>>
>>Jim
>
> Well...... in my non-UV-using opinion, I'd say when your pond starts to
> turn green would be a good indicator. ;-) ~ jan
=========================
That may also indicate the bulb's sleeve needs cleaning, or you hooked it to
a faster pump pushing water through it too quickly.
--
RM....
Frugal ponding since 1995.
rec.ponder since late 1996.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
Zone 6. USA
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