Black mold in silicone
So, I just bought a second hand ADA 75P.
The guy I bought it from had it stored outside his house, in his garden shed.
Stupid me, I didn't thoroughly check it when I bought it, so I got home, unboxed it, and it my surprise, there is your typical bathroom black mould, inside the silicon seals on the bottom parts.
Its not that much, but still, I'm sceptical about it. I tried scrubbing it off with a toothbrush, but to no avail. I let it soak in bleach for half an hour, and it still didn't come off. My guess is its inside the silicone, not the part that is between the glass panels, but that tiny extra bit inside the aquarium corners. I tried scraping it with a sharp knife, but I will ruin the silicone if I put more force.
So, is this dangerous for the aquarium? Will it compromise its rigidity, will I get leaks, should I just ignore it? Its not that much to annoy me to the point that I make a fuss about it and return it, unless of course, its dangerous.