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post #229 of (permalink) Old 03-27-2012, 01:56 AM
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Join Date: Jan 2006
Location: Burnaby, BC, Canada
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Originally Posted by Francis Xavier View Post
...eventually all things must end for the planted tank. Inevitably the plants become old and tired, no longer able to pull from the exhausted resources of the ecosystem.
Makes perfect sense, and exactly what happened to my 20 gallon after about 4 years. At that time, should one just pull everything out of the tank and restart or is it possible to just replace the substrate?

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