In article , js1 wrote:
On 2005-01-13, Richard wrote:

They require oxygen, but the water doesn't need to be circulating.

I'm staring at a one litre tank right now with 2 harlequins, 2 pencils and
a glowline rasbora and a bunch of baby crypts. No filter.


So your plants produce enough oxygen for the fish to survive?

The plants are seedlings, or rahter tiny plants that grew from pinhead
sized spurs off a crypt rhizome. They were supposed to be there
"a day or so", but that was back last October.

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