I've grown this strain of white rhino, under proper lighting. The plants (no offense) look pathetic. 2 ounces max for all those plants put together, dry weight. If you're lucky. They just aren't getting enough light, and so they need much more time, at least 2 more weeks I would say. By the time you trim the shade leaves and sugar leaves their won't be much left on those plants. But if an ounce or two was all that was expected then I guess you aren't doing bad, I've seen worse.