Posted: Thu Aug 12, 2010 6:48 pm Re: am i overfeeding or underfeeding?
The head-size rule is basically for pellets (and I sometimes keep to it with other high protein foods as well). For lettuce, I'd try a medium-sized leaf for starters. If he eats it all and doesn't get diarrhea, then I'd pretty much use that as a guide. If you to find bits of undigested lettuce floating in the tank, then I'd offer less.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-