This spa is rated as a 2-3 person spa but it really is for 2 people max with a cool down seat they count as a third. First off this spa runs around 5k or maybe a little less without cover, steps, and chem startup kit. The frog chemical system seems to work very well and it comes equipt with an ozonator standard. The jets are quite powerful on this little tub and it has what they call "tri-zone" therapy, in other words three seating positions which work 3 different parts of your body. It does as it claims, and is very quiet doing its job. All in all, I think its a fantastic tub, very little normal maintainance, and esthetically pleasant to look at. Would recommend to anyone looking for a small and low maintainence spa for a retired couple.