I've been reading and researching different pool aerator designs and ideas. My question is what is more important, the water coming out of the aerator or the agitation of the water from the aerator? My plan is to insert a "T" in my return line with a valve so that I can choose when to use it. One idea is to try a shower head that I have laying around or create an orifice out of PVC. From researching my idea I've come to the conclusion that the more holes the better, but should the aerator be pointed up (arch) or down (into the water). Any ideas, pictures, feedback, and experience is welcomed.