HElp finding a 1000 watt tent ....Just moved

I need to find a cheap tent for a huge coolable hydro farm1000 watter light..I just moved ..and im trying to use a old shed in the back but its so old theres light leaks everwhere wasted 90 bucks on tarps that didnt work...My hoods heavy thanks this needs to happen quick

I built a PVC tent 5x5x6 you can get more information here https://www.rollitup.org/grow-room-design-setup/476262-my-diy-pvc-grow-tent.html