I just purchased a house with a J-335 spa, so am new to all of this. I'm leaning towards going with the Nature2 + MPS system because I'm sensitive to chlorine. The hot tub has two filters. Do I want to put a Nature2 core into each of them, or just one?
Also- stupid question. The original order form for the spa says an ozonator was included. Is this something I should be able to see? Also, if there is one, how would you recommend I adjust the dosing for the MPS?