100 reactions · 22 comments | That piece of Algae 勞 could be the infamous BBA, Green Algae, Brown Algae .. it works for all of them. 1- Turn off your filter 2- Spray a little of Hydrogen Peroxide 3% (you can find in pharmacies) 3- Wait about 3 minutes 4- While you wait, click on my profile and follow me  this means a lot to me 5- Turn back on your filtration That piece of algae will be dead in some minutes. Questions send me a DM | Cheap Planted Aquarium | Facebook