tank problems

[randy123]

So last night I brought up the new sump. This morning, all the corals in the tank are closed and look extremely unhappy. The fish are acting strangely and one may be dying. I'm not sure what do blame it on, so here is the list of suspects:

1) silicone for sump baffling - cured for almost 2 full days and used one without mildew additives that I have used successfully in the past

2) dirty piping - tried to rinse it all out...maybe i missed some?

3) flow changes for return pump being brought up - stress?

4) pvc cement-cured to 2 hours, although maybe some remained in liquid form and got mixed with water somehow?

5) The sewer drain - the emergency drain for the house was blowing out sewer gas this morning - it was rank! This my my suspected cause, but I don't want to rule anything out until I am sure. I poured vegetable oil down it and it is good now.

Symptoms:

1) My tang looks disoriented...I've noticed this in my bicolor too..I have 4 fish that are all sitting in a corner and staring at the wall

2) My bicolor is breathing heavily and has faded color-other fish have normal coloring and are respirating normally

3) Corals all closed

4) Mystery Wrasse looking and acting 100% normal...him and 2 other fish are at least eating.

5)Water took on cloudy look, but i believe this is microbubbles from the new piping

6)Problem seemed to start up over night...sump was running for 6+hours before I noticed any problems


What I am doing about it:

1) Happily I had a new reactor that I was about to fill with NP pellets...now using it to run 1 kg of carbon

2) Running the skimmer- set it up hastily and pulled out a full cup of foul smelling crap...only tea colored, but still, for only being operational for 6 hours, it is a lot

3) 100 gallons of saltwater ready for water change in about 12 hours

System Info:

1)About 160 gallons water volume
2) ph 8.3, SpG 1.025, ammonia, nitrite, nitrate-0
3)Just finished transferring all contents from old tank to new tank a week or so ago-everything was going beautifully before last night. I was running below the overflow line without a sump for about month. Tank bacteria population inherited from old tank with 90 pounds of live rock from the old setup. Have been dosing with "Stability" as a precaution.

Anyone have any ideas? A few of my fish have been perking up, but I'm still worried, especially about the bicolor...