Angelfish problem

Question
I just recently bought a new 55 gallon tank and prepared it as instructed with water cond. heater filter etc. I put 2 angels in with a sucker 2 sharks and a dragon fish. They were fine for the first few days but would just sit in one spot and not really move except to eat and explored alot when i first put them in. Now one is sitting very low by a plant alone and the other is floating sideways but can balance for a second and then just floats sideways or upside down. They did stick together but are now on opposite sides of the tank? I have checked temp which is okay and tank seems to be clear and other fish are fine. Any suggestions?

Answer
Hi Leamon,
Thank you for your letter. This hobby can be very tough, but I have written easy to follow, wholistic aquarium care instructions, posted free at my site:
http://steamboats.com/aquarium.html
If you study the stymptoms of over feeding, then learn what is recommended, you may see that you have been feeding too much.
Also, your water may lack a friendly bacteria culture. You can buy bacteria culture at the aquarium supply shop.
Also, if you used tap water, that might be the problem.
Please try again using my system. Please print out the instructions for your future reference.
Write back if you want to discuss further.
Nori