not if this is the gross or mechanical filter, and not even if it is the biofilter as
long as treated water is used. the biobugs adhere in colonies to the filter
material. what is normally rinsed off is the mulm and silt that are covering the
colonies and keeping oxygen from them. Ingrid

MattR wrote:
By washing your filter out every week you're washing off the bacteria
that will help kill the algae. You're also washing off the other
bacteria that remove the ammonia,


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Solve the problem, dont waste energy finding who's to blame
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