Ok all......I have made a a drawing of what my plumbing plans are. The Manifold will use 1 - 1.5" up to the top, 1" around perimeter and the outlets will reduce down to 3/4" using Lok line. The pumps that I have listed are not set in stone as of yet, but they do come close to the turnover rates which is 10x tank out of sump and 20x tank out of manifold. Any ideas, suggestions and or critiques are welcome.