this is the controler that is the brains of the unit.

LabJack - LabJack UE9 USB/Ethernet DAQ

not sure if the carbonic acid content of the water would be good for the root zone,I use a homemade aeroponic system(another thread).
initially I will use metered pumps on containers of up/down soultion, sampled and adjusted once daily

this controler will run everything,lights, CO2,airtemp,water temp(heaters and, chiller loops), humidity,fans,and Ph all in one unit

I will post more as it is being implimented

maybe mixing nuits in another container and letting it set for two or three days befor useing it,might let it stablize