Be sure to stop by my page and let me know how your build goes if you do. I'd love any feedback on what you like and what could be changed- already had to add an extra hose clamp to my original design after using it for a while (I updated the build page a while back to reflect the change).
Nice! I might try to make a Hydra of my own before commencing my next batch.
You can get your chiller to work even faster using smaller diameter tubing- more surface area to chill water volume. Of course then you get less coolant through, but you can use parallel streams. I used three 1/4 tubes to run coolant through, all split from one supply steam. I did a write up about it on my blog here: