Noticed this on one side of my 125 gallon tank. Does this mean the silicon is failing? Is this a big concern for potential water leak or big damage? The tank was bought used and it’s in very good shape and clean. I have had it set up for couple months now and so far no issues. But I didn’t pay attention when I set it up so don’t know if it was like this when I bought it or there has been something going on. Also, if this is going to cause leak, it’s going to be a dripping leak first or it will suddenly explode due to the water pressure? Any inputs would be highly appreciated! Thanks
