OK, Thanks to Elaine I now have ordered my pump - who can recommend a lond
airstone 30 - 45 cm to produce a line of small bubbles (fizz?).

Tia,

Sky

"SkyCatcher" wrote in message
...
Hi,

I want to have a vigorous "air cuirtain" at a depth of approx 1.5 metres
in an aquarium. Can anyone recommend an air pump that can deliver this? I
have tried a copuple but at depth they give out a pitiful amount of
bubbles!

I have posted to rec.ponds as I suspect I might need something designed
for KOI ponds to deliver what I'm after,

tia.

Sky