Hey everyone... so happy i found this place! im pretty new to the whole aquarium thing. I've had simple boring 20 gallon tanks till now. You know with fake plants and all that. I just got a 50 gallon rimless tank from someone, hoping to make a real aquarium. My issue is, the silicone on the sides is sooo gross. I would rather not take off all the silicone, since its still nicely sealed... can i remove just the gross stuff, and then add more new stuff on top?