Thanks for the replies. That 500 for $35.00 is a smokin' deal !!! I'll watch for that !
Jonathon, being that the 404 is undoubtably the the finest aquarium product ever produced, a fee of $ 35.00 is is even more smokin' than the price for a new Aquaclear 500...

. But if Deb's got a disconnect, I'll buy it from ya'.