Brown Algae ID - Dino, Diatom or just stuff?

evrydayzawrkday

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Data

  • Age: ~ 2 1/2 months (looking at my receipts, I started this around 12/15/21)
  • Size: Fluval Evo 13.5, ~10lb live sand and ~10lb of dry rock in the display (and another ~2lb of crushed dry rock in the middle chamber)
  • Ammonia: 0 ppm
  • Nitrite: 0 ppm
  • Nitrate: 9.3 ppm (30-day avg is 6-10ppm)
  • Phosphate: 0.12ppm (30-day avg is 0.1 ppm)
  • Calcium: 482ppm (30-day average is between 470-490)
  • Alkalinity: 11.4 dkh (30-day average is between 11.4-12 dkh)
Coral is continuing to thrive, but I took a quick snapshot to check and see what I have going on here. What I am doing is...

  • 3ml All for Reef spread across 12 doses per day
  • Food: Red Sea AB+ for coral, shrimp for clownfish daily, around 10a (when the lights turn on)
  • Microbatter Clean (one capful) the last two weeks (same time when I do feeding)
Here is the pic. I am pretty sure this is part of the ugly phase, but is it diatom, brown algae or dino? No air bubbles and the nutrients aren't high enough for me to think dino but it's something to throw out there. At this point I am just curious and looking to expand my knowledge :)

Also, this does NOT blow off the rocks with ease at all and it feels slightly slimy and powdery in some cases.

(Note the photo was taken about 20 mins after feeding).

Thanks for the help!

XZ4EjrR.jpg
 
Data

  • Age: ~ 2 1/2 months (looking at my receipts, I started this around 12/15/21)
  • Size: Fluval Evo 13.5, ~10lb live sand and ~10lb of dry rock in the display (and another ~2lb of crushed dry rock in the middle chamber)
  • Ammonia: 0 ppm
  • Nitrite: 0 ppm
  • Nitrate: 9.3 ppm (30-day avg is 6-10ppm)
  • Phosphate: 0.12ppm (30-day avg is 0.1 ppm)
  • Calcium: 482ppm (30-day average is between 470-490)
  • Alkalinity: 11.4 dkh (30-day average is between 11.4-12 dkh)
Coral is continuing to thrive, but I took a quick snapshot to check and see what I have going on here. What I am doing is...

  • 3ml All for Reef spread across 12 doses per day
  • Food: Red Sea AB+ for coral, shrimp for clownfish daily, around 10a (when the lights turn on)
  • Microbatter Clean (one capful) the last two weeks (same time when I do feeding)
Here is the pic. I am pretty sure this is part of the ugly phase, but is it diatom, brown algae or dino? No air bubbles and the nutrients aren't high enough for me to think dino but it's something to throw out there. At this point I am just curious and looking to expand my knowledge :)

Also, this does NOT blow off the rocks with ease at all and it feels slightly slimy and powdery in some cases.

(Note the photo was taken about 20 mins after feeding).

Thanks for the help!

XZ4EjrR.jpg
cyano or smth on sand, misc green algae on rocks. It just kinda happens in dry rock tanks. Itll pass in time
 
Last edited:
I believe those are diatoms, they are ok .
Good stuff. I was thinking the same thing but wanted to check. I mainly got it after adding pods then doing 1ml of phyto to the tank twice daily. I think I may raised nutrients to quickly (happened a week ago, nitrate hit around 14 ppm but a large WC fixed it)
 
add some pods, ceriths maybe. itll go with time.

Whats your CUC? it won't stop the algae, but help maintain params and biodiversity
Three hermits, maybe 4-5 Astera snails, Mexican Turbo and 2x Trochus (one recently died).
 
Too premature to diagnose without a microscope. Judging by the tanks age and parameters, I'd guess diatoms.
 

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