Help with this guy

MrMorningstar

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I have had this algae in the photos for months, I’ve tried feeding less, my parameters are all good, my stocking isn’t heavy at all. I water change 5L out of the 52L tank weekly. My light is a decent one but set at 45% intensity. I blast rocks with turkey baster at minimum once a week and clean glass 1-2x a week.


1. What is this turf like algae I have never been certain?
2. How can I slow its dominance without chems.
3. I also have a worm problem. The orange things. What are they? And how do I reduce their numbers as they will cover my glass if left untamed?

FYI I changed my lights to bright white only for photos. This is not my normal setting. This is also my first tank so any advice is appreciated and please go easy on me haha

image.jpg image.jpg
 

W31Olds

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What are your Nitrates and Phosphate levels? I see Cyano and some GHA. No Turf Algae. The GHA may be Bryopsis. What and how many CUC members do you have?
 

W31Olds

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Here is Pic of Turf Algae on the back glass of my Tank. Very Green and never gets more than about 1/16" thick. I also never prune or remove it and my Tangs graze on it a lot.
IMG_20260319_160611.jpg
 
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MrMorningstar

MrMorningstar

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Here is Pic of Turf Algae on the back glass of my Tank. Very Green and never gets more than about 1/16" thick. I also never prune or remove it and my Tangs graze on it a lot.
IMG_20260319_160611.jpg
I will do a nitrate and phosphate test when i am next home to provide accurate figures. As for clean up crew I have 2 hermits, 4 Cerith and 1 trochus. The turf algae you have actually looks nice haha.
 

dvgyfresh

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Does appear to be bryopsis or some type of
Calcified macro algae as I can see structure
 

Matthew31

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This is going to be highly controversial but I’d dose Fluconazole or brightwell vibrant 😆. I know you said no chemicals but other than manual removal idk how else to beat it.

Fluconazole work way faster in my opinion. It says it doesn’t work on turf algae but I’ve had success with it. If it’s actually turf algae idk what will eat it.

If you have an aoi (all in one aquarium) I’d research if this is even possible :)
 

BitR0t

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This is going to be highly controversial but I’d dose Fluconazole or brightwell vibrant 😆. I know you said no chemicals but other than manual removal idk how else to beat it.

Fluconazole work way faster in my opinion. It says it doesn’t work on turf algae but I’ve had success with it. If it’s actually turf algae idk what will eat it.

If you have an aoi (all in one aquarium) I’d research if this is even possible :)
Why wouldn’t fluc or vibrant work on an aio? In the end it’s just a box of water with the compartments laid out a little different
 

Matthew31

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I’m not sure if you need a skimmer to oxygenate the water and help pull the nutrients out of the water that caused it to grow.
 

mmorrison55

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If it is bryopsis…

Appearance and growth
  • Feather-like: Looks like fine, dark green, branching filaments, similar to a fern.

  • Dense tufts: Grows in thick clumps that can trap debris.

  • Anchors: Attaches to rocks, sand, and corals, often in high-flow areas.
Causes of outbreaks
  • High levels of nitrates and phosphates.
  • Low magnesium, alkalinity, or pH.
  • Temperature swings.
  • Can spread through fragmentation (asexual reproduction).
Control and eradication methods
  • Manual Removal: Pluck it out with tweezers, but be careful as fragmentation can spread it.

  • Cleanup Crew: Emerald crabs and tuxedo urchins may help, but results can be inconsistent.

  • Chemical Treatment: Fluconazole (often sold as Reef Flux) is a common and effective chemical solution, but use as a last resort as it can affect the biological filter.

  • Nutrient Control: Reduce nitrates and phosphates through water changes and media.

  • Magnesium: Some aquarists raise magnesium levels to 1600-2000 mg/l to inhibit growth.
 
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MrMorningstar

MrMorningstar

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If it is bryopsis…

Appearance and growth
  • Feather-like: Looks like fine, dark green, branching filaments, similar to a fern.

  • Dense tufts: Grows in thick clumps that can trap debris.

  • Anchors: Attaches to rocks, sand, and corals, often in high-flow areas.
Causes of outbreaks
  • High levels of nitrates and phosphates.
  • Low magnesium, alkalinity, or pH.
  • Temperature swings.
  • Can spread through fragmentation (asexual reproduction).
Control and eradication methods
  • Manual Removal: Pluck it out with tweezers, but be careful as fragmentation can spread it.

  • Cleanup Crew: Emerald crabs and tuxedo urchins may help, but results can be inconsistent.

  • Chemical Treatment: Fluconazole (often sold as Reef Flux) is a common and effective chemical solution, but use as a last resort as it can affect the biological filter.

  • Nutrient Control: Reduce nitrates and phosphates through water changes and media.

  • Magnesium: Some aquarists raise magnesium levels to 1600-2000 mg/l to inhibit growth.
From what I have seen I think you are right with bryopsis. Thank you everyone for the help. I’ll begin my research haha and use what is above to start battling it. Need to check my phos asap too!
 

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