[dr wethumb]

http://www.monsterfishkeepers.com/forum ... p?t=155356

I used this sight because it is easier to post pics.

 

[Mcdaphnia]

I'm pretty sure you should have epoxied your new plywood replacement back before siliconing it in place. That would have prevented the seepage into the unpainted wood through the silicone. Eventually the wet plywood will release from the silicone.