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.
 

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