[Dash]

My Reefer’s Nightmare came true & of course it’s just when you’re feeling smug. Just a couple of nights after a WC & re-scaping, I was admiring how good everything looked, when I saw with horror that water was seeping from the bottom front. Thank God I noticed before I had gone up to bed. It’s my nano (about 25 gal?) snd it was a slow leak so I was able to quickly transfer everything into a tub. Dammit!
The dimensions of the tank (31” x 12” x 15”) was great because it fit so well on the shelf. I don’t think I can find a similar tank quickly (let me know if there’s any leads) so it occurred to me that I could re-seal this tank. It’s in good shape and I also chose all my equipment around it, including the HOB skimmer.
My husband helped me when we did my sump years ago but I know that’s a different kinda thing. Any tips please from experienced tank builders, repairers?
Where can I buy the right silicone? I know I have to scrape off old silicone but do I need to actually take tank apart?

Many thanks for any input, advice etc.