Listen to this!

[jgarden2000@juno.com]

I got this aquarium book (titled 'Pet Library Advanced Aquarist Guide')
at a used book sale recently. There's a section on filtration that reads
as follows (the last sentence is the important one): 

"A recent innovation is the introduction of ion exchange resins to
construct filter beds. Available resins will remove both organic and
inorganic soluble introgenous compounds. Used with discretion, they could
be of use to control algae. Resins that could change the pH and hardness
of the water are also available but it is doubtful if these will be of
great practical value to aquarists."

What do you think? Do you still agree that those wouldn't be of value
today (the copyright on the book is 1969)?

Thought you'd like to hear about that. :-)

William

Please visit our website at
homestead.juno.com/jgarden2000/aquaria.html

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