hair algae

How to remove it is a whole another story. Multiple water changes and add a yellow tang, kole tang. turn your light cycle down by half. Turn your lights off for a few days. Treat your tank with Kent tech M. The list goes on. For now check your phosphates and see if you have excess nutrients in your water column, then post with your levels.
 
If you do have HA, you do have excess nutrients in the system; no two ways about it. Tech M will only work if it is bryopsis (and hope that it isn't).

It takes a multi-level approach... remove excess nutrients (phosphates) through reduced feeding and more frequent water changes (plus a good skimmer).

Manually remove what you can, and cut back on your photoperiod (this will help but will not beat it all by itself; same for fish that will feed on it).
 
cr500_af;607879 wrote: if you do have ha, you do have excess nutrients in the system; no two ways about it. Tech m will only work if it is bryopsis (and hope that it isn't).

It takes a multi-level approach... Remove excess nutrients (phosphates) through reduced feeding and more frequent water changes (plus a good skimmer).

Manually remove what you can, and cut back on your photoperiod (this will help but will not beat it all by itself; same for fish that will feed on it).

+1
 
So far we are good. First attack the problem as mentioned above next I go back to the basics I start every tank with. Blue leg crabs they eat hair algae, they eat cyano, man they eat it all. For your size tank I would buy at least 200. If you buy them bulk like that you should be able to get them for around .20 each So 40$ or so some places are a little more expensive. If you would like the studies on this or other links to show the facts behind it fell free to pm me I'll send them to you.
 
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