I am up-scaling my brew rig to make 25 gallon batches, that means that I needed to replace my old 48 qt tun with a 150 qt tun. Here is the result.
I started with this marine cooler that I received as a safety award years ago.
Then I installed a drain system made from 1/2 in hot water pvc. None of the joints are glued and each of the lines has holes drilled one inch apart down the length of the pipe.
The drip distribution system looks something like this. I will upload a pic of it soon.
what is your efficiency on this setup?
I have since upgraded to a HERMS and never tested the efficiency but it always made GREAT beer!