Yes, it is futile. If we make the Stream smaller the flow will not carry much at all. Many people say that Seio offers a smaller version. This is true but the Seio produces a hollow cone of water vs the full flow of the Stream, as a result the pressure is greater and the lower volume flow still has enough force to carry. For these small tanks we offer our standard Turbelle which have 1" outlets which for the flow rate is proportionally equal and also quite diffuse. It really makes no sense to make a smaller Stream than what we presently offer.