i'm a little confused, you may it sound like the bottom of the tank was cracked and you tried re-sealing it but it leaks?
If that is the case, then maybe it would be best to avoid having to use water in this tank, unless you replace that piece of glass?
As for paludariums, there are a lot of choices you can go with...with herps, you could maybe do some kind of small chameleon, frogs, snakes... naturally could add lots of small fish etc as well just to brighten up the whole thing...
At the end of the day really depends on what type of herps / fish are you favorite and stocking / setting up your tank around them...
If that is the case, then maybe it would be best to avoid having to use water in this tank, unless you replace that piece of glass?
As for paludariums, there are a lot of choices you can go with...with herps, you could maybe do some kind of small chameleon, frogs, snakes... naturally could add lots of small fish etc as well just to brighten up the whole thing...
At the end of the day really depends on what type of herps / fish are you favorite and stocking / setting up your tank around them...