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Re: [APD] RE: WPG vs. lux or Allgayer Teton table conversion
On 05/02/2004, at 3:40 AM, Steve Pushak wrote:
Scotty Extemporized (Scott-E, eh) :
Hmmmm. Didn't we have this class last year, and the year
before, and the . . . ?
There are numerous discussions in the APD about watts per gallon.
for non-existent information would be fruitless.
Let me rephrase my question/objective: I'm looking for a way to relate
convert the Allgayer Teton lux tables for specific aquatic plants to a
per gallon (WPG) rating for those plants.
Then why didn't you ask THAT?
Instead you referenced 2 totally unrelated postings, and postings that
were talking about different things at that, suggested 1500-2000 lux
was a reasonable target and then said that 2000 lux wasn't necessary,
and gave different and competing assumptions for the responses you were
looking for from each of the 2 posts you provided links to. And, to
make matters worse, you never mentioned the Allgayer Teton lux tables
or indicated that you were looking for a conversion for them. You
didn't even ask about WPG equivalents except for a range from 1500-2000
lux which is quite a deal different to the range covered in the
Allgayer Teton table.
Hypotheticals are OK, but this is getting plain ridiculous. There was
so much confusion in your original query that I couldn't see how anyone
could hope to answer it coherently, and now it transpires that you're
asking for a table to convert advice in a book you didn't even mention
in your post.
And what a table you want, given that any answer is going to have to
account for the differences in efficiency of different lighting types,
height of lights above the water, diffuser/reflector characteristics,
water depth, water colour or purity, and presence or absence of algae
on interior surfaces. No one I know of has ever composed such a table
and I doubt there is one because if there was, we would all know about
Finally, you said:
Steve P feeling Pithy this morning ;-)
(joke at your peril) >:-[
Just to ensure my safety, may I state quite categorically that I am not
joking! This post makes your first post even more ridiculous because it
indicates that you didn't ask for what you wanted so I really don't
feel that you're in a position to criticise respondents who don't give
you what you were after.
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