I had the week between xmas and new years off, so we got a fair amount done at home, although a lot of it was spent dealing with tank issues.
I decided to repaint the area that will be behind the wall since there were some mildew issues from water spillage and moisture. I picked up some Zinsser bathroom primer to redo the section - I did all three walls and the ceiling. I covered the 200gal with a dropcloth, but being the wintertime all the doors and windows were closed. That was on Sunday night, 12/26. I woke up on Monday and looked at the tank, I found it to be very cloudy with two fish gasping at the surface against the overflow screen, the puffer and a female tomato clown.
I netted both fish out in a hurry and dropped them in the biocube upstairs as a holding tank. I couldn't locate the other three fish in the tank (I found them later after the tank cleared up and I could start moving rocks around, they were most likely all dead at this point). I cranked up the skimmer, set up a HOB running carbon and did a water change and started making RO water to mix more SW. I went back up to check on the other fish, the tomato clown was dead but the puffer was looking ok...then I realized when I turned the light on that the biocube was clouding up too, so I pulled the puffer out of there and put it in one of the 30gal rubbermaid holding bins that is keeping LR/LS for the new tank.
By Wed morning my main tank, the 55 reef, had started clouding up too. I set up a spare canister running carbon on that and did a few water changes. By wed night I lost one clownfish and probably the royal gramma (still haven't found it). The other clown was obviously distressed, so I netted it out and put it in the now-clear biocube (after three 80% water changes and running carbon for three days). About the same time, the holding system downstairs had also started clouding up, so I moved the puffer into the biocube with the clown. There was some initial aggression, but they seem to be fine now.
I'm still running carbon and purigen on the 200gal, the 55, and the holding system. I spent pretty much all day Mon-Thurs either transferring RO, mixing SW, messing with filters or skimmers, or hauling buckets for water changes. I believe the puffer and the one ocellaris clown are the only two fish that survived.
On the upside, whatever toxin got into the tanks, it did not seem to have any effect on invertebrates. All the corals, even the SPS, never looked stressed. The snails and hermits were unaffected, as were the other organisms in the rock and sand bed. I'm thankful for small favors because if that stuff took a dive at the same time, I would have nothing left but a big stinky mess. I'm still skimming like crazy on the 200gal and the holding system (skimming very wet and taking off about 5gal per day of cloudy tea-colored skimmate, and very very foamy).
On the actual progress side, I was able to get the stand for the new tank finished and in place. I was also able to get the crate built around the new tank in preparation for moving it. I'll have to get Liz to take some pics of this, as it is going to be quite a spectacle. The tank is currently on cinderblocks inside a 2x4 crate with foam blocks, just inside the shed doors about 1000' from the house. I'm going to pick the tank up with the forks on the tractor and drive it down to the house. The tank has to go in through the bulkhead and it takes four people to carry it safely; the door is too narrow to fit two people side by side carrying the tank. So, the tank will be placed on the lip of the bulkhead stairs and strapped to the tractor. It will basically slide down the stairs, being controlled by the tractor. Once at the bottom, it will be moved on furniture dollies across the basement next to the stand, so the only real lifting will be off the dollies and onto the stand.
I have some pictures of the stand and area around the tank, I'll post them when I get home tonight.