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 I've tried browsing the web site but cant seem to find much information under the "produkte" section.
Quoted from "Katzenfreund"
Just specal things like flow cantroll or pump regulation are probably no possible.
Quoted from "Shoggy"
???
He needs only a flow sensor and the imp/l value can be adjusted directly through the aquaero.
OK, for controlling the pump he will need the aquastream.
I only mention this because it sounds like it would be impossible when he is using linux.
 I've found the linux source, and it looks great.-