Hi I have a tank that is 530gl and it is glass sides with plywood with fiberglass bottom. I have done a little repair on the bottom with fiberglass and now need to seal it. there is silicone where the glass meets the wood I do not want to peel up the silicone it is almost new. is there any thing I could paint on the whole bottom to seal it? Or do I have to take all the silicone off and seal it then resilicone it.