Both eventually died. One died within a month of getting home and the second died after about 3 months. First the mantles withdrew then they didn't close or open all the way then they just shrank and died. Very messy. We kept the shells for in case we want to get more, we'll have a half shell to let them attach to. We have plenty of light and the water quality is fine, I think they starved but they should not have because they were plenty big enough. The next time we will feed them. The last one died about 3 weeks ago.