The saddlebacks killed both gobies before we could get the evil beasts into their new tank, they chased one to death, and the second died after the clowns were removed; I think she was just too stressed. Even though I tried putting food into and around her little cave, she just refused to come out or eat. I'll really miss them, they were great fish. I learned a lesson the hard way - sand-sifting gobies don't mix well with semi-agressive and agressive fish, even small ones.
Now that the clowns are out and the gobies are gone, the bioload is significantly reduced... and yet there's a horrid cyano bloom going on. I'm assuming it's the result of two fish dying within days of each other and overfeeding (I was putting lots of food under the sand to try and encourage the remaining goby to eat).
The other fish are doing great, but a few of the corals look like death warmed over - the tank is running very hot (84F +) and some of them are bleaching. Levels look okay, but no doubt there have been nutrient spikes which can't have helped. I'm going to try and find eggcrate tomorrow.
I finally got the 6-stage RO/DI working, no thanks to the manufacturer's 'directions'! Thanks to charlie for the diagram, it was the only thing that saved me. It's busy dripping away in the other room, putting out water at a TDS of 8; apparantly for the first little while the readings are high, because of dust from the filter inserts or something (though I did flush them), so I'm not worried. Coming right off the RO membrane the TDS is 3, which I think is right where it should be. I'm so happy to have RO water, it's been ages since I did a decent water change since the water coming from the tap was actually worse than what's in the tanks! I'm surprised, our tap water has a TDS of 125 - I figured it would be lower. No more tap for me, I'm excited to see if things improve with RO.