I can't get a sreaight answer as to whether to get a single speed or a two-speed pump. I am replacing a dead ITT Marlow 1 HP Argonaut pump and I think a full-rated 3/4 HP whisperflo will work (emphasis on "I THINK")

I like the idea of a two speed so if I eventually get a chlorine generator I can keep a constant flow moving through the generator unit. Some folks have agreed this is a good approach, others say low speed won't circulate enough water to filter, other say I only need a two=speed if I have a spa - which I DO NOT have.

I'm getting desperate to get SOMETHING running before my water goes to heck - so any last minuter advice would be MUCH APPRECIATED!

Thanks