I searched through several threads but I didn't find the info I needed. I have an AG 15x30 Esther Williams pool and the pump went out. The filter is an Astral Pool Millennium Series 2000 High Rate Sand filter. It's 22" diameter and holds 250 lbs of sand. The flow rate is 50-60 gpm.

The old pump is an Astral Pool sena two speed. The tag is faded to make out much on it but I can try if you need more info.

From what I've read a two speed pump is a good idea and saves quite a bit on energy cost. What size should I look for? Which specific pump would you recommend?

Thanks!