actually that's incorrect. That was the way flowing thought worked, however they changed it a few patches ago.
Before, (tecnically) you could have gotten one FT item of each level. IE: Ft1, 2, 3, 4, etc...
Aside from the near impossiblity of getting items with each of those, that would have enabled you to get 55 mana a tic if you had one of each.
In the recent patch, Verant capped the ammount of mana you could get from flowing thought to 15 mana per tic. However, to off set that they also changed it so that flowing thought items of the same level WILL stack with eachother. So two ft1 items = one ft2 item.
Mixed blessing. Means that you can now get by with using multiple low level ft items to get to the cap, but also means that as soon as you hit the cap, getting more FT won't give you any bonuses.
Faelawen Starfyre, the Mad Mage of Povar
Leader of Defiant Heroes and arch nemesis of the evil squirrel empire.