Good or bad Algae

Nick R

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can some one help? my friends tank has alot of this thick dark red/Maroon algae on the back wall of the tank.

is this bad?

will try post a pic later

thank you
 

Rod

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can some one help? my friends tank has alot of this thick dark red/Maroon algae on the back wall of the tank.

is this bad?

will try post a pic later

thank you
Not good, check his water parameters and see that the circulation is adequate.
 

Alan

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Is it a slime algae or a hard calcareous algae?
 

Alan

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Slime algae is a bad one and i agree water parameters should be checked esp phosphates. What skimmer is he using and how much water flow in the system?
 

jacquesb

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Hi there - I would also agree with Thalion - more DIRECT water movement on the back end of the glass... Since I moved my power-heads to blow directly towards each other (was blowing against the back glass) I too have some cyano bacteria.... Yeah - I know - I think that my phosphates are still a little hi-ish.... I am feeding MUCH less to try and curb this, as well as my phosphate reactor is now in full swing as well....
 

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