What started the fire ?
get urself a c grade fire extinguisher for each grow room ( I suggest by grow room door and it Mounted there for easy access ), enviromental monitor and if u can an auto turn on extinguisher by temp. I have those mounted where main light controller,amp breaker and deh are. Yes a lil costly but can also save ya a huge life breaking mistake .
Blog is about Kanex Fully Automatic Ceiling Mounted Extinguishers. About Where to install? How to Operate, etc. Read more..
kanexfire.com
def suggest even in kitchen but exp grow to have one for every room. Key is class c