The algae in thicker patches tears off the rock pretty easily, but it is near impossible to scrub off a powerhead. Perhaps a hydrogen peroxide scrub on the powerheads is in order? Is this turf algae? I currently have 2 clownfish, a tomini tang, a lawnmower blenny.
Temp - 79degF
Nitrate - 0-2 ppm
Ph - 8.0
Alk - 8.3 dKH
Ca - 430 ppm
I have hanna phosphate reagent on the way.
![_DSC9361.JPG _DSC9361.JPG](https://www.reef2reef.com/data/attachments/2609/2609744-8f90a84e5c65cc36087629f083c9fd47.jpg)
Temp - 79degF
Nitrate - 0-2 ppm
Ph - 8.0
Alk - 8.3 dKH
Ca - 430 ppm
I have hanna phosphate reagent on the way.
![_DSC9323.JPG _DSC9323.JPG](https://www.reef2reef.com/data/attachments/2609/2609742-a29de8edf30479159be8be7b3dac54ba.jpg)
![_DSC9332.JPG _DSC9332.JPG](https://www.reef2reef.com/data/attachments/2609/2609743-50e7d4324011be31d4fb3bfaed1d0040.jpg)
![_DSC9361.JPG _DSC9361.JPG](https://www.reef2reef.com/data/attachments/2609/2609744-8f90a84e5c65cc36087629f083c9fd47.jpg)