Ignore those lists of plants that are allegedly the best at cleaning the air. All plants produce oxygen and help clean the air. The ones that do the best are the plants with the most leaves and leaf surface and those that are healthy and growing vigorously. So it is best to select plants that you know how to take care of. In addition, it is the soil that does most of the filtering of pollutants, so growing your plants in water won't help clean the air. A better choice for you may be Pothos because they are less demanding than Hedera Ivies.
The cell structure of roots developed in water is different than cell structure of roots grown in soil. The roots can adapt from one to the other, but the transition is not easy.
