Hair algea how to get rid ???

[Chowder]

Are you sure you have Hair algae and not bryopsis? Does the hair alge look feathery?

Chris

[Oscar]

I went through the following steps, trying to go from cheapest to the more expensive:

weekly Water changes
pruning
chaeto
pruning
more snails
pruning
Mg to 1600
pruning
shorter light period
pruning
phosban reactor
pruning
new hallide

At the end of the day the problem was a hallide that was too yellow.