Has anybody ever used GE Silicone I for bath with mildewcide in it accidentally? And if so how long did you let it cure or cycle until it didn't kill fish. I can't believe the toxin leaches forever, I used this to adhere my foam background that I have so many hours in I just can't face tearing it out and starting over. I'm willing to wait it out for a long time if time will do the trick. Also, would draining it dry be better than leaving it full and changing water a lot be better.