- Jul 14, 2019
- Reaction score
Not sure how well you can see it in this picture, but I'm noticing fuzzy brown algae all over my rocks. I've had some on the glass that I would just scrape off, but it's now starting to cover everything. Tank is 2-3 months old with an Aquaclear 50 HOB filter and a Reef Octopus BH-1000 HOB skimmer. I also run Purigen in the filter. I also use RO/DI water from the LFS. How do I get rid of this? Is this algae or diatoms?