My 75G bowfront leaked at bottom seal so ordered a new 125 this morning. I will start building the stand today. Sump will be 55G and the refugium will be a 4' long 33G. I will be designing the system in the next couple days as I wait on the new tank to arrive. One of the items I want to upgrade is the ATO reservoir. I had been using a 5G bucket. Thinking a 32G Brute can if I can get it to fit in the stand with 3 tanks there. I will update here as I progress.