Moved to Hardware/Equipment forum:
I assume you are talking about the Eheim Compact pump
but I didn't see any reference to a 5000 number and the highest GPH
rating I saw was 263 which isn't going to be powerful enough for your 210 gal
tank as a sump pump.
Is this for a sump? Do you have drilled or HOB
overflows? If so how many GPH
can your overflow(s) handle?