So we do all the plumbing, get all the sand and rock, and make our own sump for our 90 gallon tank. Then we get all excited and completely fill it with salt and all and guess what? It leaks!!! I am so dumb for not checking for leaks before all this. And what a bummer. Just drained it to let it dry. Any advice on resiliconing it?? I want, no NEED, to do this right. Its 2 of the bottom corners that seem to be leaking.