Quote:
Originally Posted by turbomkt
Tom,
I've got a modification to your schematic that may appeal to those who want less to show up in their tanks. Specifically, make this to hang over the edge of the tank like a HOB filter or overflow. Something like this (CD-790065 at DrsFosterSmith.com) should give an idea of what I'm talking about.
The reference solution and probe can be outside the tank, while only a little would reach inside. |
No, you don't want the reference solution and probe outside the tank. Unless the reference solution is at the same temperature as the tank water at all times there will be distillation going on, with water moving from the warmer water to the colder water. That would alter the KH of the reference solution. Much better to just minimize the size of the unit in the water.