I certainly don't know anything about using multiple SWGs with a pool, but if you are using one SWG with the Easytouch and the second with the standard power supply, would you not be able to adjust the percentages on both to match?
Jim,
Yes, you could, but the whole point of automation is not having to go out to your equipment pad to adjust something. You would not have to run the independent one at 100% but you would want it to be doing more than half the work, so that you could adjust the one connected to the ET up and down via ScreenLogic to fine tune the chlorine levels in the pool.
Jim R.