I am also going to reseal the tank which I have done before on a 200g tank.
By this is assume you mean re-doing all the silicone on corners and around overflow? If So, ive been thinking of doing this to the used 125g tank i recently picked up, since the tank and silicone is old and pretty dirty. I would like to redo it with black silicone. IF this is the process you are talking about, can you elaborate on how you go about it a little? Thanks.