Sick Ram For Days....any Help?

So heres the deal. I have a sick (round-bellied) Ram symptoms are lethargic toward the bottom of the tank and not eating. He has an appearing and disappearing red patch on his abdomen.
 
 I got it from the pet store about 4 weeks ago along with another ram. I had a freak leak in my 20 gallon last Thursday, I was away at work all day and I had a friend save as much water and gravel as possible. Long story short, I got a new tank and probably saved about 1/3 of the water. I filled the rest of the tank with new water probably until it was about 3/4 full and over a day or so added the rest.
 
Please note this ram in particular started acting sickly the day BEFORE the leak. At this point, I hadn't done a water change in a few weeks, So i did a small change,changed the cartridge AND the media ( I use polyfilter that had been in for a few months and needed changed) as well as trapped him in the breeder to make sure he was eating, which at this point he did. He actually seemed better when I went to bed that night. Then the next day was the leak. He has been displaying these symptoms ever since. The strangest thing to me is the fluctuating red in his abdomen. 
 
I only have strip water tests, but so far there are no spikes in anything. Anyone have any meaningful help they can give me besides get a liquid testing kit and give you the actual parameters? Because I can't right now, and I don't know how much longer he has. I moved him into the breeder yesterday to try and feed, but he wouldn't even eat bloodworms. 
 
Help?
Note: The darker spots on his belly in the picture is the "red" that is off and on.
 

These fish are bred to be congenitally deformed and as such are bound to have underlying problems. It may be that this isn't the reason its ill atm, but it could well be.
 
The fact that you changed all the media may also have something to do with the problem as you would have removed much of the bacteria that eliminates harmful elements in your tank, in particular ammonia and nitrites.

The red patches on his belly do they appear to look like bleeding beneath the skin, Or is the red patch on the surface of the skin.
I can't make much out in the pics as there to small for me.
Check his anus to make sure in not enlarged, swollen, or look red.
What does there waste look line when  the fish go to the toilet?
Check for red streaking in fins.
Does his belly look bloated, or sunken in?
 
Take as sample of your tank water to LFS for testing. Ask the LFS if they wouldn't mind writing the readings down for you.

I'm thinking he's a she displaying the red belly coloring signifying readiness for breeding.
 
http/en.wikipedia.org/wiki/Ram_cichlid