I've been out a while too. Finals week is next week (and this is the FINAL finals week for the degree), been dealing with the fact that Dad passed away a couple weeks ago and the memorial is this Saturday, plus usual life stuff. As for the horses, all three are fine, although I have been slacking on water changes. They just got a 28% change last night, and I'll do another 14% change in a couple days to get the water quality back, but I can tell from the hair algae that my nitrates must've been getting up there.
Maybe sometime this summer I want to do a foam/rock tower for my horse tank, kinda like you're doing Teresa. Are you using live rock in the foam, or tufa rock and live rock to seed it after its in the tank?