I think my coral are dying or dead

CiscoKidx

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This tank is fully cycled. The Xenia has been in the tank for two weeks and looked great up until last night. The Zoa is a couple days in and fully opened on day 2. Now it fluctuates between partially opened and closed during the light cycle. The two clowns and blue eyed Kole Tang are thriving. I’m not sure which kind of stony coral that is but it hasn’t changed in appearance since coming home from LFS four days ago.

I did my first water change, 20 gallons. The tank is 120g.

Ammonia: 0
Nitrates: 0
Nitrites: 0
Alk: near 0 (the salt water I’m getting from LFS also reads near 0) I’ve dosed Alk twice and it doesn’t seem to raise it.
Cal: normal
Mag: normal
Ph: 8.4
Salinity: 35
Temp: 79

IMG_1766.jpeg IMG_1765.jpeg IMG_1763.jpeg
 

Featherweight

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Alk cannot be zero. This not a correct reading. Your alk can't be like that w normal ph and calcium

How long have they been in the tank?
 

Crabs McJones

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Welcome to R2R! I'd pick up a different alk test. There's no way it can read 0 as salt mix will contain an alk of 6-8 depended on brand plus with dosing it's likely way high.
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Mr. Mojo Rising

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corals are very delicate animals, a 2 week old tank is new and sterile environement, no nutrients in the water, your alk is unknown and you dosing so its even more questionable. Your lighting and flow is unknown. I think you may have moved forward too fast without ensuring your tank is prepared to handle corals. Its usually suggested to wait a few months before adding corals.
 
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CiscoKidx

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Alk cannot be zero. This not a correct reading. Your alk can't be like that w normal ph and calcium

How long have they been in the tank?

Thanks for the input!

Xenia has been in for two weeks.
Zoa 4 days.
The stony I can’t identify, 4 days.

I’m going to take a water sample to LFS and confirm readings.
 
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CiscoKidx

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corals are very delicate animals, a 2 week old tank is new and sterile environement, no nutrients in the water, your alk is unknown and you dosing so its even more questionable. Your lighting and flow is unknown. I think you may have moved forward too fast without ensuring your tank is prepared to handle corals. Its usually suggested to wait a few months before adding corals.

Thanks for helping out. The tank is a month old. It was filled with pre bacterialized water, live rock and sand from LFS.

Flow is an AI Orbit 4 and the Xenia is getting very low, Zoa and stony moderate.

I attached a picture of my lighting profile for the two AI primes.
 

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twentyleagues

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You say tank is fully cycled but your tests indicate you are not cycled or the test is incorrect. How did you cycle the tank? What is "normal" ph and calcium? What test kits are you using?
The corals could be not opening from a few things too much light, too much flow, not enough nutrients. What lighting are you using? Can you post a short video to see the flow in your tank?
 
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CiscoKidx

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You say tank is fully cycled but your tests indicate you are not cycled or the test is incorrect. How did you cycle the tank? What is "normal" ph and calcium? What test kits are you using?
The corals could be not opening from a few things too much light, too much flow, not enough nutrients. What lighting are you using? Can you post a short video to see the flow in your tank?

I was told it’s fully cycled if you’ve had fish, snails and hermits in there for a month and Ammonia, Nitrite and Nitrate are all 0. Also the LFS told me the water they provided was prebacterialized. They said I could add fish 5 days after install.
 

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Mr. Mojo Rising

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I think you've got your lights set pretty low, the flow seems pretty low, and no nutrients. Give the corals light, flow, and nutrients, and they will thrive.
 

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