I would recommend the 20g HIGH, from an aquascaping perspective. The 30g high is way too narrow --too narrow to create an effective foreground-->midground-->background. You will end up with a curtain of taller plants in the back with a steep drop off into the foreground.
I wouldn't worry about water pressure, unless your tank is more than 15 feet deep.
I wouldn't even be considering sword plants for tanks of this size.
Carlos
I wouldn't worry about water pressure, unless your tank is more than 15 feet deep.
I wouldn't even be considering sword plants for tanks of this size.
Carlos
