Got ahold of an Ultima 2 in a package deal not sure if i should part with it or run it. ive always heard good things about them just never wanted to spend the coin on a new one. the website claims it only needs 2k gph for a pump so that wouldnt be hard to do at all and it seems great for having a crazy fast way to do a water change... what would be the best way to plumb this thing? does it need a prefilter? would it be best going through my sump? i know there out there just not sure how common they are on ray tanks. any feedback would be awesome!