i will admit i slacked off on feeding nori for the past 6-8 months now my tangs a few of them are looking a little thin is it the nori that gives the tangs their bulk? because i feed frozen and flake or pellet 2 times a day most days some days even 3 times. ive started back feeding them nori once a day over the past week but how often do you guys feed nori to your tangs?