Need help with identifying this outbreak (corals dying)

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Could you help me identify this 'algae' please?
My 3 corals have already been suffocated by this :(
I tried methods for cyano and for dino but both were futile.

https://i.imgur.com/cIlKBJn.jpg
https://player.vimeo.com/video/328970393

HK_Fuey

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Reply #1

Cyano. what have you tried? What size is your tank, your test results, lights, lighting schedule, how much flow do you have?
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Chris O

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Reply #2

Are you sure? It's pretty thick and really hard to remove. Closest I could find is a turf algae. It is not stringy it does not produce air bubbles.

190 G.

Lights:
- 3x65W Jecod/Jebao Ak-70 (11h)
- 8x80W ATI T5 Sun Power (5h)
    - 4 x Blue Plus
    - 2 x Coral Plus
    - 1 x AquaBlue Special
    - 1 x Purple plus

Powerheads:
- 2 x Aqua Nova Wavemaker 13000 L/H 40W
- 1 x Jebao OW-50 20000 L/H 50W
- 1 x Jebao OW-40 13500 L/H 35W

Parameters in the attachment.

I tried:
- lowering parameters
- raising parameters
- scrubbing it off
- GFO in/out
- VSV
- dosing bacteria (MicrobeLift Special Blend)
- frequent water changes
- infrequent water changes
- increasing/lowering food

HK_Fuey

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Reply #3

Sorry, I looked at the photo and it looked red to me, but the video shows it better. It looks like gha, or turf. I'd reduce lighting (12 hours is a lot). You could try vodka/vinegar dosing to reduce nitrate and phosphate, and see if the algae has been sucking it up quickly, so it's not in the water to be picked up on tests. You phosphate is mostly high (aim for 0.03ppm max).

What CUC have you got? Turbo's are excellent at eating this stuff, so if you've not got any/many, I'd get some.
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Chris O

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Reply #4

I have no CUC.
I tried 2 peppermint shrimp and 1 Nassarius snail.
Lasted 1 day I guess with the company of Picasso/Humu Triggerfish.


Supplements:
- Daily:
    - Vodka/VSV/currently just vinegar (10 ml) + few drops of lime juice
- Weekly:
    - AquaForest NitraPhos Minus (10 ml)
    - MicrobeLife Special Blend (10 ml)

HK_Fuey

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Reply #5

Yeah, probably the triggerfish.

Why vinegar and NitraPhos Minus? They're both forms of carbon dosing, so I'd just stick to vinegar (that's what I use too).

MicrobeLife Special Blend is bacteria for starting a tank off. If yours is established, you don't need it.

I'd be tempted to use GFO or carefully use a Lanthanum Chloride phosphate remover to bring the phosphate down. Carbon dosing only removes a little Phosphate with Nitrate. If your Nitrate is zero, then it'll not remove much/any Phosphate.
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Chris O

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Reply #6

I have used GFO in the past but now with no GFO I have 0.00-0.02 PO4.

ajm83

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Reply #7

As @HK_Fuey says,  this stuff is normally dealt with quickly by snails once nitrate and phosphate is sorted.

Since you can't use inverts, are there any fish you could use instead?  Rabbitfish maybe? 

Chris O

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Reply #8

3 day blackout (covered in blankets) did NOTHING :( besides stressing out the corals and fish.

Fish (20):
- 5 x Chrysiptera parasema (Yellow-tail blue damselfish)        | 2.5 cm    / 1’’

- 4 x Monodactylus argenteus (Silver moonyfish)              | 5 cm    / 2’’
- 1 x Pseudocheilinus hexataenia (Six-line wrasse)            | 5 cm    / 2’’
- 1 x Zebrasoma scopas (Brown tang)                     | 5 cm    / 2’’
- 1 x Zebrasoma flavescens (Yellow tang)                  | 10 cm    / 4’’
- 1 x Siganus vulpinus (Foxface rabbitfish)                  | 10 cm    / 4’’
- 1 x Rhinecanthus aculeatus (Lagoon/Humu Picasso Triggerfish) | 10 cm    / 4’’

- 1 x Acreichthys tomentosus (Bristle-tail Filefish)                           | 5 cm    / 2’’

- 2 x Amphiprion ocellaris (Ocellaris Clownfish)                               | 1 cm    / 0.5''

- 1 x Paraluteres prionurus (Blacksaddle filefish)                             | 5 cm    / 2’’
- 1 x Neocirrhites armatus (Flame Hawkfish)                                    | 5 cm    / 2’’
- 1 x Ctenochaetus tominiensis (Tomini surgeonfish)                       | 10 cm    / 4’’

None of them eats it.

Gav

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Reply #9

Hi ChrisO , What are you using for phosphate removal ? Quite surprised the tangs aren't interested , maybe cut feeding substantially to force the feeding .

HK_Fuey

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Reply #10

It really does come down to light and nutients. High flow stops detritus from settling, but low flow essentially lets nutrient hot spots build up, so that's back to nutrients again. Reduce these, by reducing feeding, bigger water changes, phosphate removal, etc. Your tests show zero nitrate, but mainly high levels of phosphate, so I'd concentrate on that first. No lighting, will kill algae - Photosynthesis can't happen without light. Did you have any light getting into the tank at all? A blackout should be all sides and top covered, and no lights on.
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Chris O

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Reply #11

Hi ChrisO , What are you using for phosphate removal ? Quite surprised the tangs aren't interested , maybe cut feeding substantially to force the feeding .

I used to use GFO but now PO4 is 0.02-0.00 without it.

Chris O

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Reply #12

It really does come down to light and nutients. High flow stops detritus from settling, but low flow essentially lets nutrient hot spots build up, so that's back to nutrients again. Reduce these, by reducing feeding, bigger water changes, phosphate removal, etc. Your tests show zero nitrate, but mainly high levels of phosphate, so I'd concentrate on that first. No lighting, will kill algae - Photosynthesis can't happen without light. Did you have any light getting into the tank at all? A blackout should be all sides and top covered, and no lights on.
All covered in blankets 80 hours of a total blackout (besides 5 minutes daily to feed fish). Nothing happened. No algae died.
Some of it grows "under" rocks so I guess that was to be expected. Why no algae in the sump though hmmm


NO3 5
PO4 0.00

https://i.imgur.com/QXHWnKH.jpg
Last Edit: Apr 11, 2019 5:08:24 pm by Chris O

HK_Fuey

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Reply #13

Ah, was reading the chart in the wrong order. So you have Nitrate, but no Phosphate on the tests, however, the algae is consuming something. You sure it's algae if it's growing in the dark? Can you bring a rock to the glass and photograph it with white lights on? That will help us see it better.

The photo link (BTW, you can upload direct here, via the 'go advanced' button) seems to be of filter wool, with detritus in it. Is it me, or is there some red in there? Cyano?
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Chris O

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Reply #14

https://i.imgur.com/GgaK9wU.jpg
https://i.imgur.com/FHJEJAi.jpg

It's really hard to remove, I basically cannot do it with fingers, only toothbrush helps.
No long strings rather turf.
And do not produce air bubbles (no photosynthesis?).

https://i.imgur.com/2XjxPIg.jpg

it's somewhere between brown and red

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