Ok. I'll look at the askoll pump, but I've been in that boat before with my current skimmer, a swc 230. It's now running a laguna 1500 blockI prefer conical transition as it seems to give the bubbles a smoother path to the collection cup. Is it necessary? No but I see less cleaning on skimmers with this design. I'm all for reducing maintenance. I noticed they have the coneS models that have an askoll pump. I would choose that option despite the increased costs.


