Just because he has sperm plugs does not mean he is ready to breed. I have a Hypo and an Axanthic male that I produced this year that are both around 300 grams. Both of them are producing sperm plugs, but have very small(imature hemipenes). I would not put either of these males with females. Now, if your male is 900 grams and two years old and is producing sperm plugs, Breed Away? Hope that helps.