why does the bird nest kept having brown or red algae growing on the tip ?

[chercm]

any idea?

is it due to high po4 or due to too high flow as i am using Vortech mp60w ?

 

[timmytank]

What is youre ALK and do you dose a carbon source.. if you have either of these then oppotunistic algaes and bacteria will colonize the exposed skeleton. HTH

 

[ToXIc69]

probably both..

the high flow probably made the flesh recede and then the PO4 made the algae bloom..

 

[chercm]

my po4 is 0.04 and i am running zeovit . ALK is 7.7

 

[sahin]

my po4 is 0.04 and i am running zeovit . ALK is 7.7

How are you measuring the phosphate? IMO it is probably a combination of direct flow onto the coral concerned, and nutrients being present in the water.

What is your nitrates at?

 

[chercm]

no3 -0 and i am using hanna hi736

 

[allsps40]

burnt tips