trim

Hello all, I just got a used 30g (or might be a 29g). The silicone on the top trim must've been starting to go (or the trim was previously replaced and not silconed properly) because when I went to get it out of my car I grabbed part of the trim and it basically lifted up off the rim and...

I have a standard 20 gallon Hagen tank. Ive been thinking to remove the black plastic trim on the top part. I've looked closely and saw that the silicone are located on the four corners to attach the trim onto the outer face of the glass. Will it be a bad idea to remove the black trim to...