Its actually 30 of them hehe! Il see what i do,when i take out the supports tomorrow il might lay a line around the whole window. If that is what it takes to make my mind still, why not. Not that big off a deal to do anyways.I would take a syringe and just squirt some in there to be safe. I have done this on smaller 160L tank with small air pocket in the corner.
But then again a 160L aint a 1200gal.