The plant looks too small to go into hydroton. joeme69 speaks the truth. you want the plant to have enough roots to exit your net cup. I start my plants in soil if im not using a clone, and wait to get a 5 inch plant, this will assure me of 6 or so inches of root. Then i wash off the dirt a bit and then into the hydroton for veg, or into the cloner for a while to wash the dirt an shit off and let it get some size. When you start a plant, such as the one in the pic, that small in hydroton, you cannot guarantee that the roots will recieve sufficient nutrients and moisture. I have a dollar store turkey baster, that i use if I do put a small ass plant in hydroton. I douche the hydroton where it meets the plant stem,two or three times a day, till it catches on. Having said that, I have seen small plants, that I thought were goners, do a resurrection that would impress any Catholic. Give it a day or two. If I can be of any assistance PM me.