Wow that's crazy! I've been feeding once a day carnisticks with vita chem 5 days of week cuz work schedule alittle crazy.. And twice a day on weekends I should try that! I do 40% w/c twice week but suck up poop once day that's some massive growth
My tank is 4ft tall with 1''thick glass that bows a lot giving the illusion that fish are smaller than they appear. I just measured one of them when they were close to the glass and it was 8-1/2''.
I know that is still on the small side but it does make me feel better lol