Here is a few places to start researching for solutions if you are experiencing problems. It's a start.

http://www.nationalfishpharm.com/diseases.html

http://www.thefishsite.com/diseaseinfo/

http://www.simplydiscus.com/library/...es_intro.shtml

http://www.aquariacentral.com/forums...traindications

http://www.gbasonline.org/disease_chart.htm