my 50 gal started leaking out of the bottom trim. Would it be ok if i sealed the edges of the trim? If you don't get what I am talking about, water is running down the trim on the bottom of the tank, its comming out the top because a seal is bad on the inside, the inside is filled with a lot of sand right now, so would it be ok to seal from the outside? Anyone want to reccomend some sealant? thanks.