Tank is about nine months old now. Parameters were all good except for phosphate. It was .2 two days ago and 1.5 today. I bought some PhosGuard that was just delivered, but maybe I don’t have to use it yet if phosphate is going down. I turned up the skimmer not sure if that helped or not. But I did accidentally have about three days worth of food go into the tank at one time a few more days before the spike. Problem with my auto feeder. Could that have caused a spike that quickly? After a couple days? I have attached some pics under adjust white light.