- Location
- Nutley, NJ
So I was able to remove the one piece of rock that contains 95% of all the green hair algae in my tank. With it being out of the tank, what measures can I take to remove all the algae on this one piece of rock?

so you took the rock out with the algea, and now trying to figure out how to kill the algae on that rock?
You should probably try to stop the algae from growing in first place. Do you have RODI? checking your phosphate levels?
Lets say you already did, you can dip the rock in water mixed with hydrogen peroxide.
