my pump blew on my 18' x 48" AG,it was the cheap intex type pushing 1000 gph. my neighbor has a 1.5 hp waterway hi-flo pump I can use for the rest of the summer. If I hook that pump to a 100 lb sand filter will I be ok? what problems will arise? I was thinking of running two return lines just to avoid having an extremely hard jet of water at the return. will there be a problem with kids (youngest 6 yrs old) being "sucked in" to the intake?