Seems like this is a new-ish trend. I see a lot of pros to setting a tank up with this way. Mainly the ability to scape dry. However, one thing that is often sited as a benefit is the "no pests" to deal with, which sounds great but... from an ecological perspective no life on the rock = no competition if (more realistically when) a pest is introduced. Any thoughts/ experiences that can be shared on this?

Thanks,
Tom