Jana, you bring up an interesting question. Yes, it’s definitely possible to convert a regular inground pool into an NSP (natural swimming pool). However, the costs for building a natural swimming pool will far outweigh any savings you would see on your chemical maintenance . While a natural pool will save you money on chemicals it will certainly cost tens of thousands of dollars to convert it. With that said, a natural pool will definitely save you on weekly chemical maintenance costs, that’s how natural pools work. They use plants to passively filtrate the pool. However, when converting there are definitely some pros & cons to a natural pool. You have some other things to contend with such as water clarity and unwanted wildelife. I see from another thread that you’re located in Louisiana. Depending on where you live you may attract frogs, snakes, even gators with a natural pool. The water clarity in an NSP isn’t quite the same in a natural pool and those critters may be tougher to see. It’s something to consider Jana.