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Originally Posted by JB NY
I wonder if glass reflects certain wavelengths back into the tank? If so, Acrylic might behave differently.
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I was thinking of making the test cylinder out of a 6" acrylic tube. as for readings at 8" I personaly think that is to close to obtain a totaly true reading with the apogee sencors, but that will be easy to do befor I do the water tests. this will give me a 8", a 12" and then a 24" using water. if I have the time maybe a 36" water test.
Steve
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