Hey Jeff, Tell me more about the PH levels. As stated, this machine is new to us. It is a 43 gallon capacity tank and we are using a 13 to 1 water/Simple Green mix. It was recommended to us by the company we bought it from. Also, when running it to do it at 160 degrees, and only 5 minutes at a time until we get used to it.
https://www.zoro.com/simple-green-extreme-simple-green-aircraft-and-precision-cleaner-1-ga-0110000413406/i/G2572683/?gclid=Cj0KCQiA6NOPBhCPARIsAHAy2zBGjkJ6Q3xEoQ0M7X0-6wR8nNktIbdFBNHVaLgZLhI5hFVvU_DW_4waAtBFEALw_wcB&gclsrc=aw.ds
We wanted one big enough to clean 911 engine case halves in.