Stop hight stretch stringy

Wow check out your system do you have that V system that looks sick af :) Like a cyclone dwc system :) wish I could afford one anyway its a light problem buddy. reason why there is large spacing between the internodes is that the light is not set at the correct distance to the plant canopy using hps its quite hard cause it give of a lot of heat but as a general rule you want your light around 30-60 cm from the plant canopy and that should stop them stretching for the light best of luck buddy :) I would look only or the manufacture of your bulb to see the recommended hanging distance as they are all different.