Those are the ones I did with completely dry tubing, so it went well. And I could do it on the ground as a sub assembly, so not using the torch against the ceiling on a ladder right next to 2x4s. The valve is a mixing valve, so the hot comes in on the left and the cold comes in on the right, and you adjust the knob to suit your temperature desired. It only goes as low as 80 I was told, but I just did a water change on the 125 and it works perfectly. It is set on 2 out of 10 (1 being coldest) and it's perfect. Now I just turn the lever and refill the tank. Easy.


