I guess we both go for bigger system than first thought.
I will pick up my tank this weekend. It will be a glass 30X30X25 100 g cube. There will be no top brace. I will have three bulkheads in the back, a 3/4-inch upper center for water return from sump. Upper L and upper R will be two surge outlets that are 1-inch bulkheads (Bornerman style surge tank). On the bottom, there will be a 1.5-inch bulkhead for overflow box, center back. I will set the overflow water level at 3 inches below tank overflow.
I will have a sump dark with rock for a dark/sponge area type filter/refugium. I think I will fill the sump with live rock and keep it in the dark.
On top, I will have a 29 g tank converted by divider to two surge tanks. I will set the surge volume to be about 10 g each. One will spill to the other if there is misfire of the mechanism. Overflow to tank or sump if both misfired.
I am not sure which pump I will use. I will only use one pump that divided out to three: one to each surge tanks and one to return to tank continuously. I will use ball valves to control the amount of flow to each. I will not have the redundancy of two return pumps but I think pump failure should not be a big problem.
I have a bell type reflector, 400 W MH I will use for this tank for now. Maybe I will upgrade the light reflector to a better one in the future.
I will have to spend a few more weeks or months to finish modifying the tank/sump/and surge tank. I will also build a study stand and place for the surge tank. I think I will place all electric outlet, ballast and timer on top of the whole thing. This will keep the heat from adding heat to the tank and keep these away from the moisture.
In the mean time, I set up a 24 g Sunpod Nano (150 W MH) in my office. I got rock sand (pulverized limestone from Home Depo) water in it last weekend. I think I will get some frags from friends and a shrimp or two into it next week. I added quite a bit of sand from Corpus Christi bay. The rock cured from a LFS here in Corpus. The water have already clear up, even with the sand added directly from the bag unwashed. I plan to quarantine clams, fish and shrimp in this system. I cannot treat them in this system but I can make sure they are healthy before add them to my main system. I lost some nice clams to Pinched Mantel Disease and quite worry about this when I added new clams into my system. Coral will go in first and fish will go in very slowly. I will only add small fish into both systems. I think I will add either S. haddoni or H. crispa to my office tank (at the end when I no longer looking to add fish into my main tank.)
Im my office I will either keep A. percula (with H. crispa) or A. clarkia (with S. haddoni) or A. perideraion (with M. doreensis). I like smaller clowns so pink skunk and percula are prefered.
The main tank at home will be use to show S. gigantea and A. percula.