I'll have a look at the Rosies when I restock the tank. It was store bought. A proper high end job. Makes this even more painful.This sounds right to me. Was this store-bought or DIY? If it was DIY I recommend washing the tank with vinegar and washing it with water before even cycling. A mistake a lot of people make is when you start cycling you have to add a large amount of ammonia. Otherwise there's no ammonia so nothing happens (I believeKelberiFishLover19 made a thread about this). Buy some rosy reds after you're done to see if anything happens.