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Re: surface scum

Sorry, can't agree with your experience.  My 30g tank has virtually zero surface
agitation, using a canister filter, and I have no surface scum.  The only time I did
have that problem was when a fish died in the tank and bacteria proliferated.  I
don't know why others are having scum problems, but using a canister filter with no
agitation is not the cause.

Cathy Hartland
in Maryland, where we've given up on hopes for skiing this year

> Date: Thu, 19 Feb 1998 00:34:56 -0800
> From: Dave Mosley <dxm1 at calweb_com>
> Subject: Re: Surface scum
> hmmmmm.... it's been my (limited) experience that surface scum is
> directly related with surface agitation. if you're running a wet/dry
> filter with an overflow collector you won't have any surface buildup.
> if you're running a canister filter and trying very hard to minimize
> surface disturbance to reduce CO2 depletion then you're going to get a
> solid surface.
> dropping an cheesy airstone in for five minutes will dissolve the
> surface poop. i have yet to find a happy medium - no airstone, no
> spraybar, no drilled tank - aaaggghhhh.