Sump? Who needs a sump?
Kiding of course- the sump and all other equipment (sump, fuge, chiller, heaters, CR, Skimmer, RO/DI, Auto top off,etc, etc) will be in a dedicated and seperately cooled/heated "sump room" that will be about 50 feet away. This is one reason why this project will take so long to complete- the "sump room" still has to be built and the plumbing run to it.
Sorry for not keeping this post up to date but things have been pretty hectic lately. I'll see if I can find my plumbing diagram to post. I also have some updated pics I'll try to post later with all the plumbing under the tank complete and also with the 4-way running and filled with tap water for a leak check.