Quote Originally Posted by Europhyllia View Post
not a fix it expert but I would move my stuff out. See if you can get a loaner for the time being. You're a charter member so you have access to the loaner tank in the lending library, Elizabeth. Check with Jack and Justin
On it. Had something of a brainstorm and moved all my stuff over to my other tank. My only real coral-hating bugger in the old tank is a large chocolate chip, so I set him up with some live sand in a quickly rigged extra tank (more like bucket....). My real concern now is repair.

I have emptied the old tank completely, and the leak is clearly a weakening of the seam at the front/bottom of the tank. Can anyone advise what type of silicone, exactly, I should be using to fill this after scraping out the current seaming? I have a large container of waterproof silicone, but I'm not sure if it's suitable.

I'm also wondering about plans long term for this starfish and a small amount of sand I couldn't fit anywhere. I'm thinking perhaps I'll try to give them away on here. The tank I moved my guys to currently has a very large number of live rocks (literally brimming with them), but otherwise I think it's looking OK as a semi-long-term setup if necessary.

Lastly, how did this happen, and can I make sure it doesn't happen again? It took me a while to realize the leak was even there, and if the leak had been somewhere else on the tank I'm worried I wouldn't have spotted it before it did serious property damage.