Hey dizydizy which pump did you get? I've manage a neighborhood 60k gallon pool. We're using a single 3HP Pentair IntellifloXF Variable Speed pump with great success, this is its 6th year running nearly constantly and fully exposed. We have 4 skimmers, 2 drains and 8 returns. The pool is L-shaped and nearly 50 years old, one end of the "L" has a 9' deep end for a diving board, the other end is 2' sloping down to 5'. We're inspected regularly by county health. The pump doesn't meet the current turnover requirements but we're grandfathered in on that. We run full speed when we're open and 24/7 when we have high bather load/high temps, but other times we're able to run at half-speed or less. That saves us a TON in electricity, sometimes up to 75%. One constraint is we need approx half-speed for our Intellichem monitor's flow cell to operate without locking out. Pump basket seal is an annual maintenance item for us. Looking at the electrical service(since replaced) this install used to run 2 parallel 240v pumps on manual timers, not at all sure what size they were.