Or a single (large-ish) 2-speed pump and use valving to adjust your flow. Run on low speed most of the time for circulation and filtration and bump it up to high for running deck jets and bench.
Although if you size the pump to be around 90GPM on high, it would still be 45GPM on low so likely could run the circulation and deck jets on low and just be on high to add the bench jets.
Any automation will control a 2-speed pump and low risk of lightning issues.
Although if you size the pump to be around 90GPM on high, it would still be 45GPM on low so likely could run the circulation and deck jets on low and just be on high to add the bench jets.
Any automation will control a 2-speed pump and low risk of lightning issues.