When you get a chance, pick up a cheap digital scale that weighs in grams. Walmart carries them. You want him taking in about 15% of his weight at each feeding and it's always good to monitor his growth. <I just learned just how important this is... Was under feeding my bigger male.>

Happy feeding, sounds like a fun day. I've yet to be tagged. My male is pretty pissy right now <see comment above> but managed to get in his tank last night to do a thorough temp check. He's getting his first rat Monday, I'll be biting my nails the whole time since he won't touch f/t.