nutrients in aerogarden

so I have foxfarm, should I just pour the nutrients directly into the water in the aerogarden or should I mix it in a gallon jug first? I have grown before with the aerogarden and just put it in directly and it worked fine but now I have a root rot and I think its from it not mixing so good, any suggestions?

i put in directly but i dont put much in...(i havnt seen root rot on mine)

i think a premix might be alil bit better..i should start doing that too

ya cause if you put it directly in it doesn't mix and circulate correctly and it can build up in certain areas, i got luckily with my last few grows but now need to mix before hand