Montipora capricornis bleancing

[nikolamk]

Hi,

I have 180l cube tank, 8 months old. Untill today all corals growing good. Three days ago I noticed​ that one montipora capricornis polips are not extended. Since yesterday coral start bleancing and start turning white. My other two corals are in good condition and polyps are extended, even one montipora who is placed on sand is with fully opened polips.

My calcium level is 435 and KH is 7.7 ( previously it was 7,2-7.7)

Can anyone give me suggestions?

Thanks

 

[nikolamk]

My nitrate level are ~0 all time and I use 185w led light ( I own this​ corals more 4 months)

Sent from my MI 5 using Tapatalk

 

[rockhead51]

Something changed or got into your tank. The issue isn't parameters, it is the change.

Sent from my XT1710-02 using Tapatalk

 

[nereefpat]

My nitrate level are ~0 all time
Sent from my MI 5 using Tapatalk

possible problem there. You might try feeding a little more.

 

[nikolamk]

possible problem there. You might try feeding a little more.

my nitrates are ~0 all time

Sent from my MI 5 using Tapatalk

 

[billdogg]

My nitrate level are ~0 all time and I use 185w led light ( I own this​ corals more 4 months)

Sent from my MI 5 using Tapatalk

possible problem there. You might try feeding a little more.

^^^This^^^

All the creatures we keep require a small amount of both Phosphate and Nitrate for basic metabolic functions.

If you feed a bit more both will begin to show up in your testing. Phosphate should be about .03ppm, Nitrate in the 5-10ppm range for most aquariums.

 

[RobSpeed13]

try to see if you can look under it for any Nudi's just incase. never know when random pest might pop up if something else came in with eggs on it.