Natural planted tanks are not for every one......I would do lots of research before you set one up
I use all kinds of soil in all my tanks from-dirt from my yard, organic potting soil, kitty litter, clay...not every soil will work...
I buy play sand from walmart for $5.00 for 50 pounds to cap my soil so it doesn't float
You have to start out with lots and lots of plants...both stem and floating...a few plants won't work.....
Low tech, low light natural planted tank are pretty awesome setups and require little work once they mature (3-6mo) the plants function as the filter and the soil is alive....a live ecosystem...but it is still a closed system it still needs care.....just not like a regular soil based tank.....