I think this question has probably been asked before but I can't find the answer in search. Anyway, can you draw water from both SPA drain and main pool at the same time? My SPA has a spillover. I am thinking it may improve the circulation in the SPA...
On a different note, to provide enough water to spillover and 5 pool returns at the same time, I need to run the pump at 1800 rpm. If I want to cut down the power, can I run the pool and SPA independently without spillover (provided the valve actuators are on a timer)?