SPS sudden death. temperature fluctuation?

[Shinobii]

Hello,
First time question. Long time reader.
Redsea 625 XXL
Over a year old. Have a few tangs, cleaner shrimp, snails, one clown. Have some soft corals and sps (20 in total)
And they are thriving. living large and growing.
So I put two SPS in there about 2 months ago, maybe more. Color stayed true, no sign of color change or failing health.
I start paying attention to parameters a little more as I'm not seeing any growth.
Alk is hovering around 9. Calcium between 400-430, and mag at about 1310 ish.
Still no sign of problems. One thing I noticed was the temperature. My thermometer ready about 75, and reading around in the forums I find 77-79 roughly is a more appropriate temperature for SPS. So I brought the temperature slowly so I thought, and i think that's when the two sps decided to straight burn up and die.
So i'm guessing the ideal temperature for growth was not necessarily the smartest move when they had been accustomed to a lower temperature from day one.
Are my assumptions correct? My lighting parameters haven't changed, and nitrogen/phosphate are even keel with not major fluctuations.
Did I torch my SPS with the temperature spike? They are white from tip to tip. Do I trim them down to the base, or call it a learning experience and reset with new ones.
That being said, when I pick up an SPS from a store that runs at one temperature, am I expected to call in advance and make sure my tank is set to the same temperature to avoid shock for future purchases?
Sorry, loaded with dumb questions, but any confirmation of my assumptions would be appreciated, or am I missing something else?
See images. The deterioration is obvious. They are both completely white at this point. Sorry I have no images of the 2nd one but you get the idea.
Thanks,

 

[MnFish1]

Hello,
First time question. Long time reader.
Redsea 625 XXL
Over a year old. Have a few tangs, cleaner shrimp, snails, one clown. Have some soft corals and sps (20 in total)
And they are thriving. living large and growing.
So I put two SPS in there about 2 months ago, maybe more. Color stayed true, no sign of color change or failing health.
I start paying attention to parameters a little more as I'm not seeing any growth.
Alk is hovering around 9. Calcium between 400-430, and mag at about 1310 ish.
Still no sign of problems. One thing I noticed was the temperature. My thermometer ready about 75, and reading around in the forums I find 77-79 roughly is a more appropriate temperature for SPS. So I brought the temperature slowly so I thought, and i think that's when the two sps decided to straight burn up and die.
So i'm guessing the ideal temperature for growth was not necessarily the smartest move when they had been accustomed to a lower temperature from day one.
Are my assumptions correct? My lighting parameters haven't changed, and nitrogen/phosphate are even keel with not major fluctuations.
Did I torch my SPS with the temperature spike? They are white from tip to tip. Do I trim them down to the base, or call it a learning experience and reset with new ones.
That being said, when I pick up an SPS from a store that runs at one temperature, am I expected to call in advance and make sure my tank is set to the same temperature to avoid shock for future purchases?
Sorry, loaded with dumb questions, but any confirmation of my assumptions would be appreciated, or am I missing something else?
See images. The deterioration is obvious. They are both completely white at this point. Sorry I have no images of the 2nd one but you get the idea.
Thanks,

1 think about temperature (actually a couple) -

The higher the temperature, the lower the dissolved O2.

Temperature on the reef can vary considerably depending on the depth. If you bought a coral that has been at a constant temperature (i.e. not wild) - it may be part of the issue - depending on how quickly you raised it.

Do you know your nitrate or PO4? Did you do anything else?

 

[Jekyl]

Nitrate and phosphate not listed?

 

[jfoahs04]

When you say you brought your temperature up slowly, how slowly are you talking? Hours, days, weeks? Also, nitrate and phosphate numbers would be helpful. Especially if you can tell us if they've varied at all over time.

 

[Shinobii]

Nitrate was around 3.39 when I started noticing issues, and phosphates .067 ppm.
Good? bad?
temperature change was few days at best. probably a little quicker than it should have been.

 

[Shinobii]

Nitrate and phosphate not listed?

Nitrate and phosphate not listed?

Nitrate was around 3.39 when I started noticing issues, and phosphates .067 ppm.
Good? bad?
temperature change was few days at best. probably a little quicker than it should have been.

 

[Jekyl]

Nitrate was around 3.39 when I started noticing issues, and phosphates .067 ppm.
Good? bad?
temperature change was few days at best. probably a little quicker than it should have been.

Temperature swings are normal in nature which made me look elsewhere.

 

[reefman888]

Temp highly unlikely. Even if it was, it would cause bleaching not rtn.

 

[o2manyfish]

I have a 1500g system - 950g which is outside in the sunlight. On a sunny day the system temp will easily swing 4 to 5 degrees between full shining sun and the cold of night. For me to see problems with SPS related to SPS the temp has to be over 82 or under 72 - Between those two temps they may be a lil stressed (No polyps, faded color) but they do okay health wise. About the only SPS coral more sensitive to the temps are the Echinata - The Ice Fire or ORA Hawkins - Those corals - thin branched and delicate are a little more sensitive. But for the temp range/swing/shift you are talking about - I don't think temperature is your issue.

Dave B

 

[Shinobii]

I have a 1500g system - 950g which is outside in the sunlight. On a sunny day the system temp will easily swing 4 to 5 degrees between full shining sun and the cold of night. For me to see problems with SPS related to SPS the temp has to be over 82 or under 72 - Between those two temps they may be a lil stressed (No polyps, faded color) but they do okay health wise. About the only SPS coral more sensitive to the temps are the Echinata - The Ice Fire or ORA Hawkins - Those corals - thin branched and delicate are a little more sensitive. But for the temp range/swing/shift you are talking about - I don't think temperature is your issue.

Dave B

nitrates and phosphates would the be next possible issue then? Not sure what to stabilize before trying it again with new SPS. They are both officially bleached to the base. I don't think they're coming back at this point.
Everything else in the tank it doing great. LPS and soft coral no problem