Here is my step by step guide for making your own vortex style fog chiller.
Bare with me guys, this is my first post... and sorry i dont have exact measurements.
MATERIALS NEEDED:
(1) 5 gal bucket w/ lid
(1) 2' piece of 2" PVC pipe
(1) 2" PVC 90 degree elbow
(2) @' pieces of 1/2" PVC pipe
(4) 1/2" PVC 90 degree elbows
(1) 1/2" PVC cross
Chicken wire or any type of heavy wire stuff
Plumber's putty
Zip ties
STEP 1
Drill 2, 2 1/2" holes in your bucket or big enough to fit your pipe in. The first should be at the height of your fog machine and the second should be a little higher. like this:
STEP 2
Take your 1/2" piping and take the correct measurements to make it look like this. again sorry i dont have measurements. i eye balled it, but it should have the room for 2/3 to be ice on top and 1/3 open space below it.
STEP 3
Cut your 2" pipe with the correct measurements so it look like this. The 2" pipe should exit the hole that your fog machine will be at.
STEP 4
Use the plumber's putty or caulk to seal the openings around the pipes
STEP 5
Over your 1/2" pipe structure cut the right size of chicken wire to fit over it and in the bucket and zip tie it like this on the structure:
STEP 6
Fill with ice to rim of pipe.
STEP 7
Set your fog machine 3" away from your opening and turn it on. i use the chauvet 900. It should look like this:

This one i used a little less fog.

The longer i held down the button the thicker the fog got.it works great. and in these picture u didnt have the ice completely filled and it still worked great.
hope this helped. sorry it wasnt the best. goodluck!
HOW IT WORKS
Fog enters bottom tube and goes up through the tube through the ice and then exits the pipe and is forced down through the ice and out the second pipe: