hey guys... i was sleeping last night when i herd water falling, i looked out side and it was raining and did not pay atention. i woke up this morning and looked out side and it was sunny. but i still herd water falling.. turns out my 75 g tank lost about 30 gallons. i managed to save my arow and gars. i wanna seal up the tank.. anyone knows what to do?? any help will be appreciated. thx