I've had air in my pond since 2010 and I still get FA sorry air alone wont take that monster away. Like TJ says it comes and goes. Air may help some but it's not a fix for FA... I usually wait till it all blows to one end of the pond and then I try to go rake it out. Then not long after my Chara starts coming up and the FA goes away! Well my floating FA goes away...

RC

The only difference between a rut and a Grave is the depth. So get up get out of that rut and get moving!! Time to work!!