OK Here comes the Backlash phoenix   :lol:  
 
I used Carbon in my Discus Tank, it didn't make any difference that I could see, ended up taking it out, for the Simple reason being, if I ever needed to Treat with Meds, then I would have to muck around and take the carbon out everytime I treated the Tank. 
 
Tank seems to be clear now    not sure why, maybe it just needed abit of time to settle down, after I installed the New CF1200.