Spindly thin tops

Temp in the tent is around 77 to 78 highest now was around 83 but it cooled down in these parts and gets around 65 out with lights out temps at around 74 to 75 with two top clip fans blowing the top air down and a floor fan blaring the air on the bottom up and on the plants to make them wiggle and one vivosun charcoal air filter can with duct system running light is dimmable and I put it down to 15 percent I haven’t even ran it past 30 they didn’t like it and I had some leaf bleaching problems early in the grow with the new light.light is one of these guys