Building 42K in ground pool in SE Mexico where I haven't found a PB I have confidence in so sort of doing it myself, basic engineering and hydraulic calcs bought from USA on line, construction engineering being done locally, equipment sourced on line from US and construction materials and man power sourced locally. I already have a large hole in the ground with form work being raised and rebar fitted; equipment arrives from US in a week or so Mexican customs permitting, but for now I'm looking for advise on equipment location. Is it better to instal pumps, filter etc. above, below or at pool water level; I understand that below will require check valves and above shut of valves, is that the only consideration?
