I went a different direction with my baffles. Seeing as they are there to direct the water, I felt they were not realy ment as a secondary structure. And as such low strength was required. Yes it had to be strong enoulf to withstand incomming and exiting pressures, but not to keep it from leaking on the floor. Because of this and the expansion and contraction of the glass, I chose plexiglass for my dividers. The thermal coeificents of plastics make it a better divider (IMHO). Aquarium sealants will stick to it but not really bond. (Yes, still water tight) As the silicon adhears to the glass if basically makes ramps to hold the plexiglass in place. IF there were to be some massive heat buildup in the tanks the plexiglass would bend before the glass breaks. I have uploaded pics in my area for anyone to pick it apart Any critism (yes even bad) is appreicited My 2 Cents BTW Merry Christmas to one and all
Grue