I have a 75 gallon tank and plan on buying ecotech's vortech pumps . I'm on the fence if I should buy 2 mp10s or just go with 1 mp40 . The mp40 is cheeper then buying 2 mp10s . so is it worth spending the extra 100 for two pumps or do you think I would be find with just one mp40 . I would also add that I have the radions so these pumps I'm adding is going to be wireless to sync them all together .