^^^^ wow on both the previous post. I would love to have either the reef or fresh water. On the first fresh water tank, how did they get that beautiful bed of grass?
Short leafed plant or "carpet grass" though they were probably pruned for the shot.
What species is it? media for the bottom? What type of lighting? Also, wouldn't plants need O2, I mean they make CO2.
Substrates used to be whatever sterile gravel you could find, but in the 70s the Germans discovered that an iron-based substrate would allow plants to flourish. There are specially designed products now. Many people use topsoil covered in a layer of gravel.
There are a variety of ways to light a planted tank, but basically 2 watts/gallon. Plants extract CO2 in the water and covert it to O2. Heavily planted tanks need the addition of CO2 usually in the form of a pressurized injection system.
Takashi Amano is a rock star of the planted aquarium. He was the first to use Japanese gardening principles in his tanks which look like rock gardens. The style is called Iwagumi.
These are large but need to be seen at this size.
Winner of the AGA 2009 Aquascaping Contest.
And others:
lefty