I am thinking about replacing my broken 2 HP single speed with a Pentair Superflo VS.
My concern is whether there will be an issue with getting return flow into the spa at low rpms, eg 1000 rpm. The spa is elevated above the pool about 16 inches and there is a fairly wide waterfall-type feature. The equipment pad is about 70 feet away from the spa at the level of the pool/ground level.
There are 4 returns in the spa, 2 in the pool. The orifices appear to be about an inch in diameter (no eyeballs-possibly missing?). At the pad the returns are split into a 2 inch pipe and a 1.5 inch pipe.
Pictures can be seen here: