I was guessing on the time frame because I didn’t do much after that treatment... kind of just gave up. I suppose it has been more than a month. And frankly there could still be dinos, right now the sandbed is mostly covered in what I think of as diatoms... but it’s been so long I forget exactly what the dinos looked like and it could still be dinos I guess. I also have patches of Cyanobacteria on the rocks. It’s like starting a reef tank from scratch all over again... anyway what’s in the sandbed is extremely hard for me to get a good sample of. When I took the original video there were mats of dinos on the rock and that’s what I sucked up.
As for what I changed: I cut my screen size in half on my turf scrubber. I also stopped skimming for a long time, now I am skimming again. Going to measure phosphate over a week and maybe consider putting the skimmer on a timer. When nutrients bottomed out the skimmer wasn’t even collecting skimmate any more. My job has been extremely busy and the reef tank has suffered over the last year. Trying to reign things in again. Also I got a copperband in December, who has taken an extraordinary effort to get acclimated to aquarium life... so huge amounts of over feeding helped in the short term with boosting my nutrients. I also have a jebao 36w uv sterilizer that I decided to hook up permanently. I know the type of synod I had this time won’t be cured by it but it has cleared 2 previous Dino outbreaks in the past so why not.