I heard the Zen is lightweight. I don't know the weight limit for a zen is.
Some of them are sold out. Zen seems to be a good idea, but I don't know if the weight limit would be. I use a student desk that can tolerate 175 lbs of weight. And Alexa on Amazon said that some of the tanks I was looking at- wouldn't be supported because of the basking items and furniture in the tank.Your welcome