Dividing a tank?

[Johnny Reefer]

Originally Posted by Beverly

Use eggcrate with rock stacked on each side to give it stability.

He doesn't want water passing through the divider.

Is this an empty tank or a full one?
If empty, silicone a piece of glass in and just cut it out later.
If full, and/or you want to insert/remove the divider when full (and easily), well...you got me.

Cheers,