lostmind: Yeah, I figure I'll probably do that. I may take you up on that offer on the silicone.

zulu_principle: Yeah, the Xenia looks the worst of all, next is the trumpet coral, and just to think I just bought it just over a week ago.

I've done 2 water changes since, and I think I'm gonna leave it at that for now. The fish seem to be doing much better. The firefish is back in his normal spot, and the clowns are swimming in the currents again, following me around the tank. The mandarin was the only one that didn't seem to notice anything.

I noticed that the GSP are out and looking good, and my big frag of zoo's are fully out, and looking good as well. Just the xenia, colt, leather, and trumpet are still in bad shape.

Still can't find the body of the clown goby. Wanted to give him a good burial at sea (ie: toilet). Should I be worried of any ammonia spike from the body? Another thing I noticed is that both my red scarlet and blue legged hermits molted. Maybe just a coincidence?

Last question, do corals completely die, or will they eventually grow back? The trumpet looks totally dried out.

The clown goby is pretty small. Do you have hermits? If you do, that goby was probably a nice light snack for them.

I am almost psitive it is not the silicone. Was it 100% silicone or was it like the industrial grade. I do agree you dont want to put the mildew resistant stuff in there. THis is the stuff i used on my sump and it was absolutly fine. Its the same as the stuff they previously had which said aquarium safe. Theyt only put 'not for use on aquariums" because of the legal implications of when the tank blows out. Like i said ive used this and had my sump running for at least 6mos now and no proabs.
http://www.canreef.com/photopost/sho....php?photo=812

Yup, and 2 shrimps (cleaner and peppermint). When I first noticed all the corals gone, thats when I first saw the clown goby in the arms of the cleaner. Both the peppermint and the cleaner had it in their arms, eating away.

The clown goby is probably eaten by now...

I'd personally re-silicon it just in case. I mean, there was nothing else done to the tank to cause the problem. Right?

Just a small hairline fracture. I'll just pull out the silicone, and run a bead of weldon16 down all the seams. Then wash it out a couple times.

Here's something to boggle your mind however.

All my corals have made a comback. The Xenia is no longer grey, starting as of about 2 days ago. Color is coming back, and they are starting to fill out again. Same with the colt. The leather is back to normal, and looking better than before. So are the green pimple mushrooms which REALLY are spreading out nicely.

However the new trumpet I got from bluetang is dieing right out. It did GREAT for the first few days. Even the 2 polpys that fell on the leather grew out nicely and looked normal, however over the last 2 days they look almost like the picture above (however not with the webbing).

Do you think there is still something in my tank that is bothering that one type of coral?

Hello Gujustud,

I am bewildered at why your sump had a fracture. Usually acrylic tanks don't just give. Can you post a picture of that?

Titus

Its hard to explain, and a picture won't help. What happened was when I got the tank from Darren, I put it under the balcony in the backyard, and filled it with water since it needed a good clean. I left it over night. When I came back the next day some of the water had leaked out, and I could tell by the wet cement. I looked at all the seams, and there seemed to be a small drop of water coming out from one of the seams. Extremely small, but a leak nevertheless. I figured I might as well put some silicone on the cracks all around just to be safe. Also the tank was sitting outside at his place for a little while, so I figured it may of been damaged by weather changes.

Hello,

Wheather shouldn't do anything to seams as they really should be as strong as the parent material. Most of the time when a crack occurs it is due to stress from the load of the water. However, this would have caused by sharp corners, crazing, too thin of a material, etc.

How big is the tank anyway?

Titus

They will not grow back to my knowledge.

Just a quick question though, since your tank is relatively "new", are you able to feed your mandarin? Normally they can only survive on a "mature" tank, or one that's been pod infested Just curious to see how it's doing, cos normally it's not recommended to have one unless you have a well supported pod population.