So I have a 125 gallon goldie tank, and I got it in my head that I should do a complete drain and overhaul of the tank since its been running non-stop for about 3 yrs. I figured while I was at it I could fix the leaky trim and rearrange the room a bit (since its not often I get a chance to move it ). I spent today netting fish and switching them to a temp tank, cleaning the plants and ornaments for a bad case of black hair algae, and draining the 125 gallon entirely. I am hesitating going after the trim because I wanted sort of a sanity check to make sure I am not messing this up horribly.
The tank has a wide glass/plastic cross brace separate from the top trim, and on one part on the back of the tank, right where the top trim meets the cross brace, there is a leak caused by what looks like not enough silicone. To fix I was planning on removing VERY CAREFULLY the back trim piece (about 6ft long) using a flat bladed drywall scraper, cleaning all the old silicone away and placing the trim with new silicone down on both the top and side parts of the tank, then allowing a good 48 hrs to pass before I fill the tank again. Is this a good plan? Do I have to remove ALL the trim around the tank? If I just remove the one piece, how do I get the corners to seal up right with the old and new silicone? Is there anything I need to be careful about? What happens if I break the trim, do LFS's sell replacement trim?
I just don't want to mess it up cause big tanks like this are not cheap to replace