I'm very confused!!!!! My pool is coming with a 2 HP 2 speed 150 sq ft cartridge filter. My pool guy says if we get smaller pump & larger filter we will not have "crystal water clarity" and that a $100-200 savings is not worth the frustration of an undersized unit. I need to know exactly what size of both to get. What is the best to get the job done well. Will what I have be ok? Will it be save me money being a 2 speed.
Please help me.