I have one that has been doing well for a while now.
I put about 3/4" of miracle grow organic potting soil in the bottom, capped with pool filter sand. Planted a java fern plantlet from an established plant and a couple of misc. stems (not sure what they are). I put about a half dozen ramshorn snails and filled with water from an established tank. I do a complete water change every week with water from the same tank. No dedicated light, it just sits in a window that receives full sun for around 6 hrs/day. Plant growth is slow, but the snails are doing really well.
*** Not sure what "NP" means (assuming Nano Planted??), so sorry if this is off-topic.
NP is natural planted.