Just figured I’d post this out of frustration I suppose, been battling Dino’s for 4-5 months. At one point I thought I had them gone but I was quickly corrected in that way of thinking and they’ve been a presence ever since. So far I have bought a microscope and confirmed type which was ostreopsis I believe, tried turning lights off which definitely knocks them back but they are quick to return, in my PE a tank blackout does nothing for them. I’ve let the tank go to the dumps by not cleaning glass, no water changes, feeding a lot, dosing nutrients, the Dino’s have not batted an eye. Most recently I’m day 6 into a 7 day experiment dosing hydrogen peroxide and have not seen any signs of it doing anything to any type of algae in the tank, I thought this was going to be the miracle solution, it did absolutely nothing. And lastly as of yesterday I put a green killing machine 9w UV in the tank. Supposedly good for up to 50 gallons and I’m sure I’m going to hear I should have went with the 24w version but so far instead of that thing doing anything to the Dino’s they have instead taken to growing all over it just like everything else in the tank. So yeah that about sums it up, pretty frustrated to say the least. Tank grows coralline algae, params are stable, yesterdays test showed P04 of .04 and N03 of 10+ but even still I’m not convinced increasing those numbers higher will do anything. Have not tried bottled bacteria or silicates, not sure I’m going to either.