I have dealt with Aquacave. The owner's name is Albert, I think. He is in the suburbs of Chicago.I have been very Pleased with all my dealings. Even when at one time something did not go perfect, he took care of the problem right away.
I just ordered an Air pump(not from him), it is a new Luft with bigger output than the brown ones I have now, it has four ouputs. It is a new product , so I hope I have good luck with it and it is not very loud in operation.
roberto.