If you are worried about oxygen content then yeah, it's pretty easy and simple, pumps are needed for hydroponic reservoirs in dwc setup cause the water is sitting there for days and days. If you are worried about the chemicals in it then take the advice from stickynugs and look into aquarium products to clean the water. Probably cheaper than products made for the industry. One of this days they gonna start selling lighters for weed at double the price of regular lighters 🤣