So I have been doing some research and I have noticed that some people use the Zoo Med Hydroballs, and some use a false bottom...

Basically I want to know what the difference is and are there any pros or cons of either of them?

I am looking at building a waterfall or drip wall once I get around sorting out all the stuff I need for a first timer. Do I fill the bottom of the terrarium/vivarium with water? making sure that the substrate is higher than the water level so it doesn't just drown the substrate?

Any help will be appreciated