The Planted Tank Forum - View Single Post - safe to bleach and re-use?
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Old 12-27-2012, 06:50 PM   #4
Diana
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If the weather is OK, soak in bleach, then rinse in double dechlor, then spread it out and air dry. Any remaining chlorine will become a gas and leave.

You could follow up this with mineralizing (or at least pre-loading) the substrate so it is very fertile when you reuse it. This can minimize the water column dosing that may have played a part in the green water problem.
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