It's "Gibberilic acid"
from::: http://www.sonicbloom.com/background.htm
turtle420 Reviewed by turtle420 on . Sound stimulation for plant growth Hello people, I've though about placing two cheap computer speakers inside my grow room when I start with my clones... then hook-up a playback device (either CD player or cassette player) to these speakers. I though of playing classical music to the plants. I've heard/read that it helps. Upon two or three hours of research, I've found a couple of things::: There's a product/system out there called Sonic Bloom, which includes a CD/cassette with "melodies" and a foliar spray solution. It Rating: 5