You may want to fix the wording... When I just read it I thought that each one of the towers would spark off 2 quanta whenever the modulate ability gests used.
Eg if you have 4 towers, modulating one would instantly generate 8 quanta...
I see from this discussion that you meant it to only apply to the modulating tower itself... but I think the current wording may confuse players.
On a side note, this would be fun to use in a fractal deck, since you could run mono-aether a little more efficiently by gaining back quanta during "forced" discards.