Idiots guide to grow lights

Before the new grow light I was hanging the fluorescents from chains hooked onto a wooden frame made out of old bed slats and using walls of foil stuck to cardboard It worked fine, yes there was a bit of light leakage but the plants didn't care.

The new light is much more intense and has to be hung higher above the plant canopy (12 to 18 inches as opposed to 4 to 6 inches for the fluorescents) so I needed something taller. I was initially going to build a grow tent/box out of wood/PVC pipe and mylar emergency blankets but COVID would've made getting the materials a faff and I don't think it would've ended up much cheaper than buying a tent.

You don't absolutely need a grow tent, reflective walls will do nicely. I think in that video he is using polystyrene insulating board covered with mylar. Matt white paint is also very reflective. Then you just need something to hang the light from.