For your first aquascape  

ADA will launch new, easy-to-handle AQUA SOIL - AMAZONIA II. Amazonia II is made of 100% fine natural black soil, which is similar color to Amazonia (They are different material). AMAZONIA II hardly causes cloudy water during the initial set-up period because it contains less nitrogen. It is recommended especially to beginners. 

*No AMAZONIA II Powder type is available for AMAZONIA II.
*Aquatic plants grow well with combining AMAZONIA II and Power Sand Advance. 


■AQUA SOIL - AMAZONIA II | PRODUCTS
http://www.adana.co.jp/en/contents/products/na_substrate/detail02.html#series-box5