As a new grower, I bought new grow tents for veg and flower. They are from Vivosun and purchased through Amazon. Vivosun advertised their tents were light proof, tear proof, and the zippers were quality. All of this were untrue.
A couple of days ago, I finished the ventilation and lights installation. I put my seedlings inside the veg tent, then zipped it up. As I stood back to pat myself on the back, I noticed the tent was lit up like Christmas. Every place the fabric was sewn together, there was a beam of light shooting out. Light also leaked from shut ports, vents, observation windows, all doors, and through the quality zippers. In addition the tent tore during installation, and the vents cannot be opened because they were not sewn flat. Thus, they will have to be duct taped to keep out light.
I took pictures, but did not see how to post them on this site. If anyone is interested in seeing them, please shoot me directions on how to upload pics. In the mean time, these tents should be avoided.