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Blue water/ yello water

>From: mark.fisher at tpwd_state.tx.us
>Date: Wed, 12 Mar 97 11:13:45 cst
>Subject: Water color
>     >If you don't believe me, do 
>     >the test that I suggested. . .
>     >Remember, pure 
>     >water will have a light blue hue when you put it in a white 
>     >container.

>     I do ALL my water changes in a five gallon white poly bucket, and I 
>     can assure you my water is not yellow.  The tank water is not yellow 
>     and the bucket water is not yellow; it is colorless.
>     I must also disagree with your observation that you can see a light 
>     blue hue in your bucket.  It is true DEEP bodies of water appear blue 
>     because the other colors are more readily absorbed, but you would only 
>     see this phenomenon in water that is several FEET deep, not inches.  
>     Red light is absorbed first and can penetrate as deep as 20 feet.  
>     Blue light is absorbed last, and can penetrate over 1,000 feet.  
>     This information is available in any basic oceanography or limnology 
>     text.

Be that as it may, there IS a light blue hue in my 5-gallon poly bucket when
I draw it full of tap water and view it in the presence of sunlight.  I just
looked at the same bucket of water, which has been treated for chloramine
and aerated for over 24 hours; it had no blue hue, but was viewed under
incandescent light.  I have moderately hard tap (<>140ppm) with whatever
standard component of fluoride might be in there, as is typical for Clifton,
NJ.  Now, is the hue gone because of mineral loss?  Fluoride?
Chlorine/chloramine?  The different lighting?  I don't know.  And I really
can't experiment; I'm on crutches after a recent knee surgery and haven't
done a water change for over two weeks.  It was tough enough getting this
bucketfull.  Any volunteers?

By the way, anybody want to replant a floating contingent of micro swords
for me?  8)