Aqua-Flo by Gecko Alliance FMHP/FMCP/TMCP/FMVP Pump Impeller Closed face impeller made for the Aqua-Flo by Gecko Alliance FMHP, FMCP, FMVP, and TMCP series spa pumps by Aqua-Flo by Gecko Alliance. Rated at 3/4hp, it is used in a FMHP/CP, FMVP or TMCP wet end, and must be installed on a 3/4hp (or greater) thru bolt motor. Shaft seal sold separately In 2012, the manufacturer changed the way Aquaflo pumps are rated. These pumps are now assigned both an operational horsepower (ohp), and a total horsepower (thp) rating. Previous versions of these pumps used only the operational horsepower. If you are replacing an older Aquaflo pump, be sure to match the operational hp rating rather than the total hp.