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Cleaning an Eheim diffusor

At 03:48 PM 5/13/99 -0400,  Sherlock Wong asked:
>Does anybody have a tip on cleaning the glass disk in
>a Eheim CO2 diffuser? I have tried scrubbing with a brush,
>but not all of the algae comes off.

Here is my recommendation:

1.  Carefully brush the disk (remember it is fragile and brittle) with a
brush (like a toothbrush).
2.  Rinse the disk and place it in a very small dish.  Add one drop of
bleach and a few drops of water.  Cover.
3.  After a day or two, carefully rinse the disk.  Then place it in a water
glasss with 2 ounces of water and enough chlorine remover to treat a gallon
of water.  After a few hours rinse again.  All odor of chlorine (and all
chlorine) should be gone.   If not, repeat this step.

This strongly oxidizing treatment should remove most all organic material.

Dave Gomberg, San Francisco            mailto:gomberg at wcf_com