They are supose to be purple power exsept in my siol room 2 runs and a outdoor run the powers never turned purple seem to be a horible stian and like podery mildew dering bud cycle alot of fighting even in a room that is seeled and useing c02 gen. im done growing these when the barney purps and grape ape strians are just awsome.But to answer the question with the aeroponics room,they are all from seeds that was supose to be power but i do not think they are the ph is ate 6.2 and the ppm are running at 1500-1600.And there seems to be some streachin,this room i used just the white on black plastic this was a test run with this system to see if it is worthy to use here are some pics to help thank for all the feed guys its allways allot of help happy growing and smokein...:rasta: