I was looking into this http://www.ebay.com/itm/HYDROFARM-ACTIVE-AQUA-AIR-PUMP-70L-LPM-8-OUTLET-HYDROPONICS-AQUARIUM-POND-/370568341756?pt=LH_DefaultDomain_0&hash=item56479828fc
Would that be sufficient or do I need something else? I'd really just like to use one pump (two if necessary) to...