Thanks for all the help. I just can't make sense of the naming conventions of the Bubble King skimmers, it seems like skimmers rated for larger tanks are priced less or or a lower numeric number than others.

The various posts you have contributed have helped me narrow down my choices to either a Bubble King DeLuxe 250 Internal or a Reef Octopus Regal 300SSS, and the choice will come down to how reliable supply of replacement parts is.

Charles