Duckweek also inhibits jumping. I've got lots of gobies, bettas, and killies in tanks with sloppy covers and have no jumping problem.
On 2/4/08, Redragon40@... <Redragon40@...> wrote:
Duckweed has some good points, too.
If you have a tank with a heavy bioload, it is a God-send. Whenever you have a quarantine or uncycled tank set up, it acts as a wonderful deterrant to jumping, as well as being a biofilter. I always add a huge blob of java moss and several scoops of duckweed to any bare tank. The fish seem to feel secure and settle down quickly. In a fry tank, it is also great.
Carol < ' )))><