HI, WELCOME TO FISHLORE!
For information on the JD, AND the nitrogen cycle, you can go to the links under the heading at the top of this page, "ARTICLES",
Click on Fish Profiles and you will find a good article on Jack Dempseys. A little farther down is a very thorough article on the nitrogen cycle....If you don't test your water currently, I suggest getting the API Master test kit for freshwater (liquid), available at most pet stores, for approx $20-25...It is invaluable in keeping a healthy tank, knowing your nitrate readings, for your water changing schedule....understanding the cycle process a new tank goes through, and how to do that safely.
Enjoy this site, and tell us all about your tanks, we love new folks here!
