Transplanting from Oxyclone?

Is it okay to take one of those "OxyCerts" and put it in a netpot with hydroton?

well if your transplanting from the OxyClone its possible. but what are you moving the plants to. I havent used an oxycloner b4 but will assume its using 2inch neoprene collars if so then yes they will fit in a 2 inch net cup but you wont get to much hydroton in with stem and collar.