David,
If people are running the skimmer too deep, then while it may be fine running on an OTP pump, the Bubble Blaster is more powerful and will cause the skimmer to overflow. That skimmer should be in only 6-8" of water, and if you are running it with a bubble blaster, then it should be closer to 6".
To purchase the pump, follow this link:
http://www.coralvue.com/reef-octopus-bubble-blaster-2000-skimmer-pump
It will require you specify the adapter in order to purchase the pump. Make sure you choose the correct adapter for your skimmer.
Hope this helps.
Carlos