Happy to hear it worked for you.Just stopping back by to say thank you for this post, it gave me the courage to give it a try on my 25 Gallon Waterbox Peninsula which is closer to 18-20 Gallons.
I was going to try a micro dose, but as I read more in the thread it seemed that the dosage was increased to a normal does and there were no negative effects.
I decided my algae problem was pretty bad, so I said heck with the micro dose and I added MORE than DOUBLE ( 4 capsules ) the recommended dose for my system to see what would happen.
I'm happy to report that all the algae is almost gone and everything has survived in my tank which is starting to become pretty sps dominant, including all my fish, shrimp and snails. My Clam seems extra happy lately, and the polyps on my sps are longer than I've ever seen.
This Saturday will be the 3 week mark and I plan to do my 30% water change, AND hitting the tank with a second round of DOUBLE the recommended dose. I also plan to dose it a few times a Year like the OP does just to maintain, I never want Bryopsis again!... Thanks Charlie!!!