We appreciate the feedback and I'm sorry it didn't work for you. It's still working on Dinoflagellates for us. Ill pass your experience on to the staff so they know its not working on other types of algae. I would expect that the colors will come back as the photoperiod increases. Have you tried using Kent Tech M magnesium to kill the bryopsis yet? Many have been successful boosting the Mag using this specific product and having it kill bryopsis. Personally, I just take out the affected rocks and wire brush them. Once I've started over, in a sense, with an algae free slate, I make sure my nutrients are kept low and add a bunch of snails, emerald crabs, and herbivorous grazers. Hope you win the battle!