Yeah I'm gonna need an estimate to cover a 3x12x8' room with 2 400w lights and some flammable peat moss, I'm sure they could fix me right up. Interesting concept though a heat activated tube that controls release of retardant.
Seems some one could design one that is activated by a smoke alarm, cuts the power to your room and disperses the retardant in case of fire. I can see some pissed off customers if it malfunctioned though. Can you imagine, uhh I was smoking a bowl when all of a sudden the power went out and my crop that I just spent 3 months on is covered in chemical retardant. Can I get a refund.
In all seriousness someone could prob create a DIY for 2-300 bucks, I for one would be interested. There has got to be a smoke activated fire extinguisher on the market somewhere.