I am thinking of a new project in regards to potting up orchids. I am intrigued by the idea of Semi-Hydroponics and wanted to try it as this is a very good season to do so being early Summer. Can I use broken bricks as a substitute to the traditionally used expanded clay pellets? I am doing this setup for my recently brought Psychopsis. Also, I have a sick Cattleya Maxima and Laelia NOID in water culture. There are no new roots as such, there never were but I am hoping they put out new roots. As the new roots develop, I'd like to transfer them to SH as well. Any advice and suggestions are welcome.