Furry black leaf edges....What can I do to get rid?

[redwhiptailplec]

This fairly innocuous furry looking algae has covered the edges of my Sword plants leaves, it is very thin, and barely noticable...but it is more noticable because it is so discrete if you see what I mean...

I was wondering if anybody has any suggestions to get rid of this? I have Otto's in all my tanks, but only 4 in the 55 gallon and 3 in the 20, I have 5 more in quarantine at the moment. I also have 3 Ghost Shrimp and a Rubber lipped Pleco in each for clean up and about 6 Ghost Shrimp in quarantine. I suspect the Ottos are eating some of this algae but am not sure...

Any advice much appreciated!

 

[rich311k]

How much light do you have? What are your test levels? Do you inject CO2? Do you add any ferts?

 

[redwhiptailplec]

Ahh sorry, normal comes with tank bulb, no CO2, all levels optimum etc. Its a 55 with relatively high stocking of fish, and quite heavily planted, I know it shouldn't really work but all my swords have flourished...Just these furry leaf edges....

 

[Simpte]

BBA. Remove infected leaves. PWC. Dose excel according to instructions.