This is what the plant looks like

Need to figure this out can anybody give me any suggestions going to pull this plant out of my recirculating deep water system for fear that it may infect other plants. Badly wilted .

It looks like root or stem damage or the root system is blocking the system from refilling the individual pots. Whichever it certainly appears to be lack of water to the plants.
Maybe all three! It could be due to lack of aeration(again due to roots clogging the system) that kill the roots and thus suffocate the plant.