Green Algae on Sand

I have something similar. I have come to believe it is spirulina. I haev not had it checked under a microscope though. It was not affectedperoxide when I performed the cyano test described elsewhere on R2R (put a clump in 2 cups of water, add peroxide and see if it kills the algae). The only thing it has responded to is chemiclean. But it came back in 6 months.

Here's a relevant thread: https://www.reef2reef.com/threads/best-treatment-for-spirulina.247038/
Hi,

After making the test with peroxide i notice that the sample with peroxide started dying, having some bubbles on the sand in the sample... So, seems to be cyano? I'm afraid of using peroxide on the tank i will try to stabilize nutrients for a few weeks and see... if then i didn't win the battle against this i will try adding some peroxide..
Thanks again for the help.
 
Hi,

After making the test with peroxide i notice that the sample with peroxide started dying, having some bubbles on the sand in the sample... So, seems to be cyano? I'm afraid of using peroxide on the tank i will try to stabilize nutrients for a few weeks and see... if then i didn't win the battle against this i will try adding some peroxide..
Thanks again for the help.

If it is cyano, I recommend chemiclean over peroxide.

I have been using it as needed for years with no side effects. Very simple instructions as well.

Most importantly, you are doing it right by focusing on stabilizing first, a few weeks, then attack.

Then, be sure you have identified the possible cause or causes and keep control of them.

Good thread you have going here!
 
Finally i used chemiclean after months facing this algae... in 48 hours, bye algae. thanks.
 
Old thread revive! Did you ever beat this? Any tips or suggestions? Dealing with the exact same thing.
 

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