Lastly, we added a new set of tanks increasing the total volume of water from 3,000 to 4,000 gallons. Total volume is a bit misleading because the tanks could just be really deep, but there is a decent amount of square footage taken up for coral growth. Here are the pics:
Our water chemistry was crazy for a while so we recently installed 4 GEO calcium reactors (1 for each of the 1000g systems).
That's about it for now, I'm sure I'll think of something to add later.