i dunno, T3 can be kinda catabolic and is probably counterproductive during a bulker....if your really trying to stay lean while bulking then Clen is a better alternative
T3 and bulking is an oxymoron. T3 is used to get lean, so I don't recommend it for bulking. Clean up your bulking diet - if you have a problem setting one up, check out my dieting manuals.