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Gene-
You can use a "better" submersibile pumps, one that drives alot of water will usually work. Mag 18 or higher should be sufficient, althou you will see a performance increase when you use a pressure rated pump. Nevertheless, you should find sufficent aeration using one of the larger mags pumps.
Next you asked about the grey bullet containment chamber (BCC) versus the new clear ones.
The newer clear BCC is the better of the two, in that it allows easy and quick disassembly of the BCC to remove and clean the beckett head. Mike at PM made the clear BCC in response to people complaining they saw less and less performance after a few months of service, so cleaning was essential to restore this performance. So I highly recommend the clear BCC as well as a monthly or at least every 6 week cleaning and dissasembly of the beckett, you'd be amazed at what kind of junk gets stuck in there
Hope this helps
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Currently in between fish tanks
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