Syafiq Faisal Posted May 29, 2022 Share Posted May 29, 2022 Hey guys, did you guys ever try dissolved oxygen test then end up with yellow/brown wall coloring? How did you guys clean it up? Any solution for this cuz I left it a few minutes late waiting my another tube for 5 minutes. 😠Link to comment Share on other sites More sharing options...
Guppysnail Posted May 29, 2022 Share Posted May 29, 2022 For glass tubes I sit them in the sun.  My dissolved oxygen kit never stained but others have especially nitrate.  I leave other stained clear plastic items in the sun and they sunbleach clear. 2 1 Link to comment Share on other sites More sharing options...
Brian Posted May 29, 2022 Share Posted May 29, 2022 In a hurry…. A little hydrogen peroxide and a small bottle brush.  Maybe one from a filter….    Good Luck 1 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now