Hi. I'm looking for users that had simillar problem to mine (beside whole bunch of other problems...) My Kore 7th twice, dosed by itself around 800ml of ATI Essentials pro to my aquarium :/ You can emagine problems that caused in the tank I've allready found 2 people here in Poland that reported that same problem (and apparently PS did know about it). I've lost around 5000 USD in corals after that..... "error", and I'm planning to sue them, just building my case to do that properly. I tried to talk with them, but they still say, it's not their fault, that's not possible etc. And I have a lot of videos of malfunctions of that doser (some are on YT) If you have or had that doser and you can share your experiance (even if it's good, no problem at all), please do. As I saw, it's something like 50/50 but inside that worse 50 are some people like me, that it almost blew up the tank...