Hey Phil, better call the Flood Cops on that 510 in the expansion tank, = Liquid all over your table and fast
You can just buy a DC Atty from NHaler which has the 2 small holes already in them and put it in any dam tank and poof you have an Atty tank,,,,

cherryvapes universal tip may be needed to get the top cap hole sealed, depends on the size of your tank, or you can cut a piece of polycarbonate to size, with a Phiniac tank I use a cherry vape universal tip to extend the DC Atty to fill the hole in the top cap of the Phiniac tank to seal it,,works fine,,,,,,,Better ones are coming out though soon too, keep your eyes & ears open