SERVO
New member
I'm pretty sure that your algae problem is bryopsis, that fern-like structure is a good indicator. There are some threads on RC about it. It's a brutal pest b/c nothing touches it, but the Kent Tech M - magnesium treatment is very effective. I would do as much manual removal as possible then start dosing the Tech M. Good luck.
The Kent Tech M - magnesium treatment but a word of caution, follow your alkalinity levels daily while dosing! Mine plummeted!