The pump is an Askoll 15000 pump with a custom volute and pinwheel. We have since exhausted all parts from this line of skimmer. A Bubble Blaster 5000 can be used but we no longer have the conversion parts in stock and would have to be special ordered. Because of the Chinese holiday we would likely not see the part till April. If you wish to order the special plumbing to adapt the Bubble Blaster pump please submit a support ticket at coralvue.com/support and our parts department will get you taken care of.