Algae Identification & Next Steps, Help!

[Lriegle]

Hello!

I’m new to the hobby, and have had my 40 gallon saltwater tank since October 2024. Recently I have had my first algae breakout and am struggling to identify the algae, cause, and next steps. My Nitrates & Nitrites are 0, I have no way of testing Phosphates at the moment. I was doing my own research and was thinking it was Dino’s? But am looking for second opinions. Once I have it identified I feel comfortable researching a bunch of remedies but would love recommendations as well.

If someone could confidently identify my outbreak below, and give me some tips on fixing it I would really appreciate it.

My parameters are in good shape outside of my nitrogen depleted. I am very on top of water changes, and have a RODI unit for water.

 

[Lriegle]

Here are some better photos, they often have lots of little baby bubbles on them but I reduced the light intensity and timeline today and there aren’t as many.

 

[minus9]

All blue pics are horrible with details, you’ll have to use more whites with no blues in order to take better pics. Filters help, but reducing blues is a must when taking pics with LEDs.