I have a 240 gallon plywood tank I am renovating. I currently resealed the inside with about 4 coats of sweetwater epoxy. I filled it up after letting it sit for over a week, and there seems to be an extremely small hole in one of the bottom corners. What is the best way to fix this? I would really prefer not to have to buy another $100 gallon of paint if its not required. This is something i was hoping to have fixed by the end of this weekend, does anyone have any ideas?