Staghorn algae and causes?

[TooManySnakes]

Does anyone recognize this kind of algae? I believe it may be “staghorn” algae. If so what are the typical causes for its growth? 
 

I am developing this algae in a 20L shrimp tank with ~20ppm nitrate from easy green. Water changes are 15% once a week. Lighting is a dimmed Nicrew Planted plus. 

[Daniel]

This blog post has some good advice on combating staghorn algae:

How to Fight 6 Types of Algae in Your Fish Tank

WWW.AQUARIUMCOOP.COM

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Do you dream of having a beautiful aquarium but end up constantly fighting to keep algae at bay? In this article, we discuss the root causes of algae, the...

Also here is what worked for @Another Jake:

 

[TooManySnakes]

Thank you very much! Based on this and some other resources I found I think I need to keep dimming my light. I guess it’s easy to underestimate how much light a 30” fixture can put into a 20 long. Inverse square law and all that. 

[Daniel]

6 minutes ago, TooManySnakes said:

 Inverse square law and all that. 

Yeah, I think the inverse square explains most things in the universe.🙂

[Another Jake]

Mine was also a 20L. Fluval 3. Had the lighting at 50%, but it was a lot of hours of lighting. I cut it down to about 6-8 total hours. 2 of those hours were ramps. I trimmed out the worst of the staghorn, and the rest receded very fast. I was surprised how fast it dropped to a minimal level... which is fine by me.