Heres a tutorial (kind of) on how to make your own cool tube.
m getting a constant temperature of 26 degree celcius with this.
Note : do not use this to vent your room, add another bigger exhaust for main venting.
Tools you would need
-drill gun
-screw driver
-sand paper
list of items to buy
- 5" PVC x2
- 5" glass tube (go to a lamp shop around chickpet that ells lighting fixers and they wd have it)
- L angle 2"
- M seal
- Holder for HID
- Nuts/bolts
- fan
Sand the ends of pvc pipe that are gonna stick to glass. Now drill 3 holes in a pvc pipe as shown in image, two on one side and one opposite. Now attach the L angle to the holder and to the pvc pipe using screws and nuts.
Take the other pvc pipe and attach the fan to it by putting some m seal on side surface and screwing into it before it dries and also drill another hole in the side for hook.
Now keep the pvc with holder flat on ground and put a layer of meal to the sanded surface. Put the glass tube on top of it and finish by putting another layer of m seal from outside. Let it dry for 2-3 hours.
Do the same and attach the other pvc to the open end of glass tube. Again let it dry for 2-3 hours.
Now drew in the hooks and secure them with m seal and also cover the screws of the holder with m seal.
For fan I used corsair 120mm fan rated at 80cfm. one costs about 1k and you can get em over flipkart. you would need two of those.
Now to buy the duct, you can go to SP road and buy 5" flexible aluminum pipe. it'll cost about 500rs.
Attach the pipe to the open end of tube and pull it out from one of the vents in your box. Attach the other fan to the end of tube.
Thats it.