cyano problem

at this time I have a small outbreak of cyano in my tank. it's not a large mass but bunch of small masses about the size of a dime right now and some smaller. How can I get rid of it. I will try and get pics within the next day or so and post.

55 gal
ph 8.2
ammonia 0
nitrite 0
nitrate 0
sg fluctuate between 1.024 - 1.026

I do weekly 30% water change.
 
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