puffer with ich?

[reef bound]

Just came home from holidays and did the tank checks and I think my blue spot puffer has ich. He's kind of scraping himself in the sand and on the rocks. We've had him for about 1 1/2 months and has been doing good so far. He's eating PE mysis and bits of silversides, both soaked in selcon. I'm wondering which is the best medicine for him. I have lifeguard at home, but will try whatever works for puffers. Can someone give some med advice? (I'll try to put up a pic).
Thanks so much.