I got my auto water change hooked up and running. I still have to find push connector adapters for the gravity feed electric solenoid I will be installing to prevent back syphoning. I have my DOS programmed to add 3750 ml (approx. 1 gal.) at 12 pm and remove 3750 ml at 2 pm. I have also programed my ATO to be off during this time so as not to trigger my high level alarm. I have already checked if adding 1 gallon will cause a rise in my skimmer level and it seems to be ok. If this is a problem, I will shut the skimmer down as well during that time. I though about placing my OSW hose upstream of the NSW hose and operating the pumps at the same time, but decided to go this route instead.