Hi, You can find Fytocell, known as hydroflakes plus in the U.S. on amazon, check it out:
http://www.amazon.com/Hydroflakes-Plus-Formerly-Fytocell-Growbag/dp/B00A8TKX7I/ref=sr_1_1?ie=UTF8&qid=1354750535&sr=8-1&keywords=fytocell
Hope it helps.
Happy growing!