Hi, I'm new to the aquarium hobby and this is my first post here, so please be patient with me. 🙂
I bought a used 50g aquarium on Kijiji. The photos looked nice so I asked my husband to go check it out for me since the seller was on his way to work. Once he brought it home, I noticed it has some black mold growing on the silicone and the edges look a bit frayed (see photo).
Do I need to reseal this? I've browsed some posts on resealing and I'm confident I could do it (I recaulked our bathroom), but some posters said that resealing only the outer layer of silicone without dismantling the entire aquarium actually makes a weaker seal. Is this true?? I'm not willing to dismantle the whole thing.
It looks like the best thing to use is rtv, right? I can't find momentive rtv 108 for sale in Canada. Can anyone tell me if another brand will work just as well? I can get permatex rtv here, had anyone used that?
Finally, the tank is tempered glass. Is using a utility knife to remove old silicone going to risk scratching it up? Would a putty knife work?
Thanks in advance for responding to all these questions!
Last edited by Erin514; 10-21-2018 at 02:43 AM.
Reason: Remove photo