can anyone help me please Im bulding a grow box and need help how to light proof the intake and extraction holes? and will most probley use an RVK extracter fan and a computer fan for intake. please help
You can use a 90 degree PVC elbow connected to a fan and an outlet hole. You may need to paint the the plastic to make it 100% light proof, but you can at least throw the light for a 90 degree curve to help.
use a couple of 90 degree "pvc" pipes as light traps read stickies!!!!! Edit-- didnt refresh page before posting!! +rep for helping a fellow noob TeeJ (great minds think alike)
personaly i just use tile caulking to make a seal. if you're really anal about it, get some of that thick pvc glue and a small brush (like an artists brush, not those horse hair ones that come in the container) and paint a seal on, then caulk over it. some people use thick seals of hot glue as well if you want to go that route.