On 29 Jan 2007 11:38:24 -0800, "Pablo" wrote:

Ok, I will replace fish. But Can I still run the tank in the future
without mechanica filter?

snip a bunch of crap from a plagarizing indivual............that does
know know what the heck she is talking about.

A mech filter is needed unless your committed to doing water changes
on a constant basis. In such a small container of water with even a
single fish like a betta or such it doe snot take long before the
water quality goes to hell and becomes toxic to the fish......A
mechanical filter helps, but its still not a cure all. You will find
small quanity of water containers to be a lot harder to take care of
tha one of a larger quanity. It can be done, but they normally
require more attention and are not as forgiving as a larger container
is.

There are more than just a betta that will do ok in a tank, but I uwld
sitl use a hob type mechanical filter, forget an airstone and do water
changes....


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I forgot more about ponds and koi than I'll ever know!