<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><DIV>Hank, </DIV><DIV> Do you have a internal variable ballast ? If so, what kind of capacity does it have? I think I'm going to opt for a pump for my internal tank rather than compressed air, much easier!</DIV><DIV> </DIV><DIV> </DIV><DIV> </DIV><DIV>Brian</DIV></DIV>