Is this STN?

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Just put this red planet in my tank two weeks ago and I just started to notice it’s loosing color over the past couple days. Does this look like stn? It’s only white where it’s shaded, top down still has good color.
4300CA58-D6D0-4D33-85B8-9F1936F48B2C.jpeg
 
Agreed. Have you done WT? Or changed anything with the tank recently?
 
Agreed. Have you done WT? Or changed anything with the tank recently?
Just had a bit of an alk swing dropped from 8.5 to 7.5 and now I have it a 8 for the past couple days. Any way to save it? Frag it? Everything else in the tank looks fine.
 
Just had a bit of an alk swing dropped from 8.5 to 7.5 and now I have it a 8 for the past couple days. Any way to save it? Frag it? Everything else in the tank looks fine.
My alk swings 1 dkh everyday so I doubt that caused it. When you say everything else is fine, do you mean other acros are fine?
 
My alk swings 1 dkh everyday so I doubt that caused it. When you say everything else is fine, do you mean other acros are fine?
Yes as far as sps goes I have a Monti cap, digi, Walt Disney and green slimer. No issues on any of those. I haven’t had any algae or bacteria blooms. All parameters have been steady well before I introduced that to my tank. I’ve only been trying to dial in my alk. When I got it home from the lfs I noticed some white at the base, but I thought it was just the super glue they used. I shoulda inspected more closely at the lfs I guess. I’m a little new to the sps world, so I wasn’t really sure what to look for. Now just hoping there’s something I can do to save it and also if it will spread anything to the rest of my corals?
 
Is that specs of algea growth there towards the base in pics ? or polyps? have other acropora without this problem?
Lighting? led only?
 
Is that specs of algea growth there towards the base in pics ? or polyps? have other acropora without this problem?
Lighting? led only?
Those are polyps at the base and all other corals in the tank are fine, no algae or bleaching on anything else. I’m running a hydra 26, ab+ At about 70% with less green and red.
 
My alk swings 1 dkh everyday so I doubt that caused it. When you say everything else is fine, do you mean other acros are fine?
I know Chaswood79 had an epic Alk spike with little to no loses. I Agree with you brother.
Just had a bit of an alk swing dropped from 8.5 to 7.5 and now I have it a 8 for the past couple days. Any way to save it? Frag it? Everything else in the tank looks fine.

Yeah honestly that’s nothing alk swings get blown out of proportion most of the time. If I miss my morning or night dose which happens a few times a month I typically lose 1 dkh in 12 hours (it’s usually rock solid 7.5-8). In the course of 3 days my Alk spiked from 7.5-over 15 due to my consumption falling from 110mls to merely 15mls when I was having issues. Mind you nothing ever died or rtn/stn’d well except for my red dragon colony they do that when everything’s perfect so.... Other then that things didn’t seem I’ve had my ALK drop to below 6 from high growth rates. In 18 years I’m not convinced Alk swings are as detrimental as people claim. Not trying to start riot and stability is important and preferable.

I just got over my stn battle learned a lot and tried everything under the sun I’ll say that unless you had something say “obvious” that would’ve upset the corals it’s probably bacterial already in the water column. In which case there’s not much you can do but wait it out. The more you mess with things it will more likely to make it worst and just compromise you other sps. It took me 2 months of watching colonies I’ve grown for 2-3 years die and my 5 year old Oregon tort all I have left is a 1.5”. Chemiclean did help it was a huge set back so I don’t know how I feel about that. I basically cut what I could salvage of the colonies that were infected and trying to removed as much of pathogens from the tank. It finally stopped everything growing over and the frags have started encrusting good it was brutal I almost gave up and quit lol.
 
Parameters:
1.026
Alk 8
Nitrate 20ppm
Po4 .14ppm
Ca 430
 
Those are polyps at the base and all other corals in the tank are fine, no algae or bleaching on anything else. I’m running a hydra 26, ab+ At about 70% with less green and red.
If those are polyps at the base, this is probably not STN, look close at the dead spot, it there clear tissue? because two weeks is enough time for some bleaching to occur from lack of light. Possibly a shading issue?
 
If those are polyps at the base, this is probably not STN, look close at the dead spot, it there clear tissue? because two weeks is enough time for some bleaching to occur from lack of light. Possibly a shading issue?
Those are not polyps.
 
I know Chaswood79 had an epic Alk spike with little to no loses. I Agree with you brother.


Yeah honestly that’s nothing alk swings get blown out of proportion most of the time. If I miss my morning or night dose which happens a few times a month I typically lose 1 dkh in 12 hours (it’s usually rock solid 7.5-8). In the course of 3 days my Alk spiked from 7.5-over 15 due to my consumption falling from 110mls to merely 15mls when I was having issues. Mind you nothing ever died or rtn/stn’d well except for my red dragon colony they do that when everything’s perfect so.... Other then that things didn’t seem I’ve had my ALK drop to below 6 from high growth rates. In 18 years I’m not convinced Alk swings are as detrimental as people claim. Not trying to start riot and stability is important and preferable.

I just got over my stn battle learned a lot and tried everything under the sun I’ll say that unless you had something say “obvious” that would’ve upset the corals it’s probably bacterial already in the water column. In which case there’s not much you can do but wait it out. The more you mess with things it will more likely to make it worst and just compromise you other sps. It took me 2 months of watching colonies I’ve grown for 2-3 years die and my 5 year old Oregon tort all I have left is a 1.5”. Chemiclean did help it was a huge set back so I don’t know how I feel about that. I basically cut what I could salvage of the colonies that were infected and trying to removed as much of pathogens from the tank. It finally stopped everything growing over and the frags have started encrusting good it was brutal I almost gave up and quit lol.

Oh man sounds rough. So if it’s bacterial would water changes help? When you cut them did you leave the frags in the same tank or put the frags in a different tank? I could try to frag it but I don’t have another tank set up to put it in.
 
Yes as far as sps goes I have a Monti cap, digi, Walt Disney and green slimer. No issues on any of those. I haven’t had any algae or bacteria blooms. All parameters have been steady well before I introduced that to my tank. I’ve only been trying to dial in my alk. When I got it home from the lfs I noticed some white at the base, but I thought it was just the super glue they used. I shoulda inspected more closely at the lfs I guess. I’m a little new to the sps world, so I wasn’t really sure what to look for. Now just hoping there’s something I can do to save it and also if it will spread anything to the rest of my corals?

Did you dip this coral?
 
If those are polyps at the base, this is probably not STN, look close at the dead spot, it there clear tissue? because two weeks is enough time for some bleaching to occur from lack of light. Possibly a shading issue?

That would be nice if it’s a shading issue. I’m not home right now, but I’ll take a look at the tissue when I get home.
 
Those are not polyps.


OP: "Those are polyps at the base and all other corals in the tank are fine, no algae or bleaching on anything else. I’m running a hydra 26, ab+ At about 70% with less green and red."



We are looking at a picture, OP sees it in the flesh, which is why I asked him.
 
I’d definitely frag it if you hope to save it. Frag well above the dead areas.
 

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