Yup, growing them to 4 inches is fun (once) and you will know first hand how much effort is involved in that. I think every serious discus keeper should try it. I've been frustrated with my local breeder for selling me dime sized discus that weren't what he said they were. But what are going to do, I'm not going to exchange 3 inchers for dime sized ones again. I'm done raising tiny juvies, I know the effort involved and understand the economics of it. Would I do it again, hell no! But I think people should experience it for them selves once, yes!