NPT is naturally planted tank. This means I use very low light on top, most light is from the Sun from my south window, and I don't use additives like Co2 and all those liquid ferts and such. I just use plain dirt from outside, covered it in gravel, and planted. I have maybe 1wpg over the tank if that, and have a emptied filter, because NPT don't use filters either, for water movement.
The goal is to have your plants do all your tank maintance for you like they would in real life. So the tank itself is very low maintance. Your not even suppose to do water changes that often, maybe one every 3-5 months. I normally just top off the tank.
It's a really fun tank and one of my best planted tanks i've had and have had to do close to nothing, besides a ton of trimming. The plants in there grow like weeds.