Also make sure to have stirrers magnets in the rinsing chamber and testing chamberI’ve been waiting for a response but since you seem to be replying here. None of my tests are coming back with colors anywhere remotely close to what it should. I’ve tried 2 different ammonia tests and I get anywhere’s from a dark brown to a purple, no green anywhere I be found (geismann and api).
Same goes for nitrate and phosphate tests. I’ve had this thing going on 2 months now without a single accurate test to show for it. First it was the prox switch, then a blown chip, then the wrong chip, now it’s not pulling the correct amount of reagant and these strange colors for results. Fairly close to giving up and pulling down my alkatronic /dosetronic and spending for the mastertronic.