hydro with out a meter is worthless as tits on a bull.
Now all the beans, pick know types and get them working. Different strains act different, differant bloom cycle, so pick one strain and get it to work. Third node or forth node is a good starting point.
Now rememeber you do not know what they are , both males, both females, or 50/50 it upto muther nature, and you know how she reacts to the weather.
I like MH as always had the best luck with it, in test. Keep the lighting 16/8 or 18/4 for best results. The plants will have there taproot in the water in no time.