i have a 180g that has been running few months with no issues. Recently noticed a dry drip mark down fron corner of tank. It appears that there is a small bit of water between the glass and the top plastic trim. There are bass in the tank and they do splash from time to time.however i only noticed the water this past week. Do you think they somehow got water in there? Or do i need to put more silicone near the plastic top trim? Is there a leak?I attached pics. One is of the outside view and other is from inside of tank where water is between glass and trim. The seams appear to be fine. This tank is only year old.