That mark is due to poor filtration can u perhaps manage a small pump and 1
air stone
The other way to clean it is with warmish to boiling water I purchased what
they call
a dish mop
Looks like a small mop for doing dishes simply wash that in boiling water
before use keep
it only for fish and use this plus warmish to hot water to clean it
Let me know how you go good luck Vikki
"Jon Smith" <bob3257.RemoveThis@sbcglobal.net> wrote in message
news:ibSyb.8157$aw2.3512943@newssrv26.news.prodigy.com...
> I have a single goldfish that I keep in a approimate 1 gallon bowl. (I
know
> it is to small, but that is the best I can do for right now?) I change the
> water every 3 or 4 days. Today after I emptied the bowl there was like a
> scum around where the water line was. I tried to remove it the best I
could
> with a clean paper towel, and re-filled the bowl. Is there a way to get
this
> cleaner? I know that I am not supposed to use cleaners.
>
>
> Any help greatly appreciated
> Bob
>
>
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