I see in a lot of pictures of the brutus 10 that they are running two march pumps. Is this necessary? I would be buying a H315HF march pump from MoreBeer. Is a single march pump enough if its plumbed right?
The main use for two pumps would be to pump sparge water from the hot liquor tank to the mash tun while also pumping runoff from the mash tun to the boil kettle. I also use mine to recirculate while pumping ice water through the immersion chiller (Jamil's whirlpool chiller).
If you want to batch sparge, you might be able to get away with one pump. If you had a multi-tier stand, you could use gravity for the sparge or the runoff. If you have a totally flat stand though, like a Brutus clone, and you want to fly sprage, you will need two pumps.