Resin tank problem

I wanna re-used a resin tank that i left it sideways during few months and i saw that the silicone that protect the glass came off. Do you think i can use it or there is some chance that the resin flow away up to the big mirror ?

As long as the resin tank is not cracked anywhere, you should be fine if you just avoid the area where the silicone has come up. It’s possible liquid will seep under the silicone, but it shouldn’t breach the tank.