Greetings from across the pond!! Welcome to R2R and congrats on your Reefer 250!! You should head over to "Member tanks" and start a journal there, we all love pictures and progress!!
Just wanted to chime in about the mandarin! Definitely something you should wait on until your tank is well established...also very fastidious eaters so be sure to do the research on how to keep one successfully. We learned this the hard way!