Help Identifying Algae

[joshbpaul]

Hi everybody,

I'm hoping somebody can help me identify this algae that is growing on my sandbed. I recently treated the tank with fluconazole for GHA. It worked fairly well, but then I started getting this greenish to red/brown almost dusty type growth. At first I thought diatoms? Maybe it's cyano? Any advice would be greatly appreciated.

About the tank:
30 g AOI
2 powerheads
Filter sock
Media reactor with 1/2 cup GFO

At last check on Hanna testers:
Phosphate: 0.07 ppm
Nitrates: 2.4 ppm
pH: 8.3
ALK: 9.8 ppm

Thanks very much!
Josh

 

[KING KONG]

Hi everybody,

I'm hoping somebody can help me identify this algae that is growing on my sandbed. I recently treated the tank with fluconazole for GHA. It worked fairly well, but then I started getting this greenish to red/brown almost dusty type growth. At first I thought diatoms? Maybe it's cyano? Any advice would be greatly appreciated.

About the tank:
30 g AOI
2 powerheads
Filter sock
Media reactor with 1/2 cup GFO

At last check on Hanna testers:
Phosphate: 0.07 ppm
Nitrates: 2.4 ppm
pH: 8.3
ALK: 9.8 ppm

Thanks very much!
Josh

View attachment 2958842 View attachment 2958843

Can be cyanobacteria. You can try 3 days blackout

 

[KING KONG]

You can refer this for cyanobacteria

What is the actual cause of Cyanobacteria ?

It’s 2021 nearly 2022 and yet I’m still unable to find a definitive answer on what causes a Cyanobacteria many answers on the web include…. Low flow Low nitrate High phosphate Low phosphate High dissolved organics Redfield ratio Carbon dosing Detritus Introduced from another system Lack of bio...

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