Please help me identify this.

[CaBrowne]

Been fighting it for months..is it brown hair algae? It used to be all over, now it's on one rock formation and back wall. It is very stuck to the rocks. When I take a tooth brush to it there is some left behind that doesnt want to scrub off.
I do every 2-3 weeks, 20-25% water changes. I use reef crystals.
Make my own RODI water. Filters and media are newish, 2 months old.
Parameters: ph 8.1 - ph checker
Salinity 1.0265 -refractometer
Ammonia 0 -API kit
Nitrite 0 - API kit
Nitrate 5.0 - API kit
Phosphate 0 - API kit
Alkalinity 12.1 - Salifert
Calcium 460 - Salifert
Magnesium 1440 - Salifert
Use 1 chemipure elite 3 months old
Bubble magus curve 5 skimmer
5 gallon refugium with chaeto with light on 24/7
2- 425gph koralia pumps and a jebao SW8 with two return lines coming from a 825gph return pump.
Run two Bloomspect LEDs blues from 8 to 10pm at 25% and whites from 10 to 8pm at 10%.
The coral that I have (zoas, toadstool, cabbage, hammer, mushrooms, lepto, favia, and scans) seems to be fine except for my duncan ( great first week and the closed and hasn't opened since, a week now) and montipora (middle seems to be bleached out) frag
My tank was first set up at the end of April. Is it still new tank stuff?
What is it? And How do I get rid of it?

 

[brandon429]

That peroxide thread I just kicked up can beat that invader, not sure what the invader is, we don't use ID in the thread we just kill the invader

The right way to fix that tank is the #1 thing aquarists don't want to do-work and take it apart. People want something they can buy, no work. But to truly fix it, you need to take tank apart, make the sandbed cloudless as it will cloud massively in current state (algae food and next invader, cyano, food) + scrape clean off the back wall, input rocks free of invader, refill tank as new but as skip cycle cleaned. This removes invader and invader fuel and nothing you can buy or dose beats the method which is why getting after pics using alternate means is like pulling teeth. To skip cycle clean means you have after pics ready by Saturday

Hardly anyone is willing to do the right job, they'll literally do whatever it takes to avoid work. They'll keep the tank months until total start over but they -will not- do work, we are totally spoiled rotten as hobbyists. Most of the time it's fearing tank upset, but we have large threads showing that won't occur and they still don't care, people subconsciously want to keep their invasions it's such an interesting reef phenomena. In the end most just want to buy a doser and hope and wait, but 1% take control over the tank and refuse to start over.

Your invasion is preventing you from stocking the tank up with nice frags, we should clean it and stock it up. No animal, cuc, doser, test reading, ID or any form of hesitation is required, if you de cloud that tank and test model the rock cleaning approach from our thread that tank will turn around fast. You were already doing 90% of our model by toothbrushing, good job on being willing to access. You needed the little cheat for the toothbrush run

 

[Brew12]

Been fighting it for months..is it brown hair algae? It used to be all over, now it's on one rock formation and back wall. It is very stuck to the rocks. When I take a tooth brush to it there is some left behind that doesnt want to scrub off.
I do every 2-3 weeks, 20-25% water changes. I use reef crystals.
Make my own RODI water. Filters and media are newish, 2 months old.
Parameters: ph 8.1 - ph checker
Salinity 1.0265 -refractometer
Ammonia 0 -API kit
Nitrite 0 - API kit
Nitrate 5.0 - API kit
Phosphate 0 - API kit
Alkalinity 12.1 - Salifert
Calcium 460 - Salifert
Magnesium 1440 - Salifert
Use 1 chemipure elite 3 months old
Bubble magus curve 5 skimmer
5 gallon refugium with chaeto with light on 24/7
2- 425gph koralia pumps and a jebao SW8 with two return lines coming from a 825gph return pump.
Run two Bloomspect LEDs blues from 8 to 10pm at 25% and whites from 10 to 8pm at 10%.
The coral that I have (zoas, toadstool, cabbage, hammer, mushrooms, lepto, favia, and scans) seems to be fine except for my duncan ( great first week and the closed and hasn't opened since, a week now) and montipora (middle seems to be bleached out) frag
My tank was first set up at the end of April. Is it still new tank stuff?
What is it? And How do I get rid of it?

Looks like regular hair algae.

What do you have in your tank as far as a CuC goes?

 

[CaBrowne]

That peroxide thread I just kicked up can beat that invader, not sure what the invader is, we don't use ID in the thread we just kill the invader

The right way to fix that tank is the #1 thing aquarists don't want to do-work and take it apart. People want something they can buy, no work. But to truly fix it, you need to take tank apart, make the sandbed cloudless as it will cloud massively in current state (algae food and next invader, cyano, food) + scrape clean off the back wall, input rocks free of invader, refill tank as new but as skip cycle cleaned. This removes invader and invader fuel and nothing you can buy or dose beats the method which is why getting after pics using alternate means is like pulling teeth. To skip cycle clean means you have after pics ready by Saturday

Hardly anyone is willing to do the right job, they'll literally do whatever it takes to avoid work. They'll keep the tank months until total start over but they -will not- do work, we are totally spoiled rotten as hobbyists. Most of the time it's fearing tank upset, but we have large threads showing that won't occur and they still don't care, people subconsciously want to keep their invasions it's such an interesting reef phenomena. In the end most just want to buy a doser and hope and wait, but 1% take control over the tank and refuse to start over.

Your invasion is preventing you from stocking the tank up with nice frags, we should clean it and stock it up. No animal, cuc, doser, test reading, ID or any form of hesitation is required, if you de cloud that tank and test model the rock cleaning approach from our thread that tank will turn around fast. You were already doing 90% of our model by toothbrushing, good job on being willing to access. You needed the little cheat for the toothbrush run

Do you have a link to this method you are talking about. I do not have a problem doing work to the tank. If that is what is needed. I'm just not sure if this is just one of the new tank uglies that I have to wait out or if this is something that needs action. If action is required now is the perfect time for me because I will be taking the tank apart anyways to move it to my new house in 2 weeks.

I have a few questions about what you are talking about. First, my sand has always been cloudy because the bottom layer is the very fine Bahamas oolite that I bought onsale. Do I rinse this until it's clean? Is that possible with so fine a grain? Will this method hurt the coral frags and the bubble tip anemone that I have now?

 

[CaBrowne]

Looks like regular hair algae.

What do you have in your tank as far as a CuC goes?

Currently I have about 10 nassarius snails, 5 trochus snails, and about 10 blue leg hermit crabs.

 

[Brew12]

Currently I have about 10 nassarius snails, 5 trochus snails, and about 10 blue leg hermit crabs.

I would recommend adding some turbo snails to help with the algae. I would also manually remove it from the back glass.
If an algae eating fish is on your wish list, that would be a nice thing to add at this point imo.