Tank looks very nice, about the stress bars I don't know much about them mine don't have any at all, I just go by there signs, all mine have tell tail signs when issues of water quality etc are effected.
Examply my blue dimond don't show bars, it turns black when ammo is present and can be even .5 ammo for it to do it. My Red Tourq dn't get bars it just fades in colour when stressed, and pigon blood turns pure white when stressed. As far as stress bars goes I don't remember the information about them to help you out, I don't need to remember this for mine but you can go to google and type in stress bars on discuss and see what you can find.
My 2 cents just monitor them and see what happens I already see when they are stressed one of them fades in colour and the other loses colours from the help you asked for in emergancies. Secret is pretty much just keeping really good water quality the rest comes pretty easy.
theshadowinc
P.S. want to see a High tech planted Discuss tank check out my 55gal in my signature enjoy