Red Algae

[gandolf8]

Back again this has been a night mare .I did have it all gone and now it is back again for the fourth time any ideas. Thx

Water Pram
Sal 1.025
Alk 3.66 Alk 10.2
Cal 420

 

[teamdulski]

Phosphates

 

[5380]

Filaments or bubble algae?

 

[redrider911]

Are you using ro/di water? What is the tds?
what is the phosphate level?
nitrates?
flow?

 

[Gary Majchrzak]

cyano or red turf or something else?