A
ak-51
Although they're more expensive, I would strongly recommend going with a residue-free extinguishing agent like FM-200, Novec 1230, Halon, Halotron, or something similar.
Standard dry chemical extinguishers generally contain corrosive chemicals and will ruin any electronics that they get inside. They will likely contaminate your whole crop if they go off.
A residue free extinguisher will just put the fire out and evaporate.
Anything is better than nothing, but I would choose a residue-free extinguishing agent over dry chemical for almost any situation.
Standard dry chemical extinguishers generally contain corrosive chemicals and will ruin any electronics that they get inside. They will likely contaminate your whole crop if they go off.
A residue free extinguisher will just put the fire out and evaporate.
Anything is better than nothing, but I would choose a residue-free extinguishing agent over dry chemical for almost any situation.