Sands filter advice

Hi,

Hi,

I have a sands filter with a flow rate of 38 gpm.   I bought it because it said it was to be used in conjunction with a 1hp motor which I bought.  That motor has a 79 gpm flow rate.  I was reading on this site about flow rates and read where the pools pump flow rate shouldn’t be more than the sands filter flow rate and visa versa.  My pool is an above ground 8000 gallon pool.  It states that a 1 hp motor should be used on it.  Does this mean I need a sands filter that can accept a flow rate of 79 gpm for it to be efficient?  If that’s the case, why did the specifications on the sands filter say to use a 1hp motor with it when 1hp motors pump out twice the flow rate of the filter?

Thanks!