Touch wood ? What ya mean by that ?
And if I lower the water down for a day and etc, how long do I need to let it sit to dry around the edge, and how long should the silicone be sit and air out and dry before adding water back in ?
Touch Wood / Knock on wood, you know the saying?
But to answer your question, i basically lowered my tank water level to about 50%, got a dry cloth and wiped around the inside edges, let it sit for about an hour or just to really give it some time to dry off and make sure no water was left around the trim...
From there, i got some 99% alcohol, put some on a tissue and carefully went around the inside edges just to clean off any possible leftover residue, etc, then wiped clean with a bit of clean dry tissue... after that, i just got my silicone, squeezed some around the inside edges carefully, and then got a spatular type tool to clean the edges up and make sure there were no small holes anywhere which would let water in again...
Hope that helps...
-EDIT-
I also left my tank to sit for approx 3 - 5 days before i filled it back up to the top... although in all honesty, i would say once the silicone is dry (maybe 1-2 days) you could possibly fill the tank right up again, since its not one of the main seals on the sides that your fixing...