GH CaMa+.. I use the same GH line for Canna and other hydro plants and it has workled well so far. I am getting close to running out. Not sure if I will go GH again or try something else next grow.I have nothing bad to say about GH. But read the lables, some of there EXPERT stuff is snake oil.
So for my Hydro I use FG, FM FB, KB and CM. the KB and CM in flower. I dont use it only at the end, I start when buds start to show. So farI can say if that helps, but it has not hurt, its just more P and K