Re: False bottom vs Hydro
I second Mark's points above. Another thing to have in mind is how you plan on emptying the false bottom. If you don't have a drilled drain and you want a water reservoir below the substrate a false bottom will have a much larger volume to store water. Hydro balls only have about 30-40% porosity compared to 100% in a false bottom. So a false bottom is much more efficient that way and gives you more depth for substrate which will help with drainage overall.
“The shortest distance between two points is often unbearable.” C Bukowski