Help needed...corals dying and I don’t know why!

[Han_And]

Just wondered if anyone has any ideas....

we have a 5ft Red Sea reef tank recently all the LPS corals have slowly started to die one by one. We’ve done water tests and all the levels are within range, we sent of ICP test which also come back fine. Does anyone have any ideas what could be causing it?
Fish wise we have:
2 maroon clowns
Yellow tang
Jade wrasse
Yellow wrasse
2 Tabacco base
Royal gramma
Yellow dotty back
Clean up crew.
Any ideas or help will be much appreciated!

 

[bday1335]

Have you noticed any Brown Jelly substance on any of them??

 

[MCatano]

Everyone will need you water parameters to help. I would also look for coral eating pests or disease(s).

 

[Han_And]

Have you noticed any Brown Jelly substance on any of them??

No nothing

 

[DaneGer21]

Quick things to check...

Parameters
ATO
Dosers

 

[Han_And]

Everyone will need you water parameters to help. I would also look for coral eating pests or disease(s).

This is the ICP results

what sort of pests or diseases?

we’ve tried dipping them but not has much luck.

 

[Han_And]

Quick things to check...

Parameters
ATO
Dosers

What would we be checking for in the ATO? Thanks

 

[DaneGer21]

What would we be checking for in the ATO? Thanks

That it’s working correctly and salinity is correct. Same with dosers if you have them, make sure it’s working correctly

 

[Han_And]

That it’s working correctly and salinity is correct. Same with dosers if you have them, make sure it’s working correctly

Ah okay. That’s all working and salinity is correct. We don’t have any dosers

 

[PeterC99]

Have a similar problem with a hammer - heads just keep dying off and don't know whey. Parameters stable and no changes to system.

 

[TheDragonsReef]

How long have you had the coral that are dying?

What are your nitrates at?

Have you recently made any changes, especially in lighting?

 

[trout]

Are you fluidising any PO4 adsorber media or activated carbon?

Are you dosing any organic carbon?

 

[Han_And]

Have a similar problem with a hammer - heads just keep dying off and don't know whey. Parameters stable and no changes to system.

Exactly what ours keeps doing. We originally had 4 hammers. Starts off in one then eventually the others go

 

[PeterC99]

How long have you had the coral that are dying?

What are your nitrates at?

Have you recently made any changes, especially in lighting?

NO3 2ppm, PO4 01ppm, No changes to lighting.

Had the coral for almost a year now.

 

[Han_And]

How long have you had the coral that are dying?

What are your nitrates at?

Have you recently made any changes, especially in lighting?

Some are close to a year others only a month or so.

we changed our lights from the kessil A360’s to the radion xr30 pro’s gen 4. We changed them about 6 months ago or so

nitrates were about 10 so on the lower side

 

[PeterC99]

Exactly what ours keeps doing. We originally had 4 hammers. Starts off in one then eventually the others go

Wanted to like your post but doesn't really seem appropriate.

No major changes to my aquarium, very stable parameters, everything else seems to be doing very well. Can't explain this one coral...

 

[Han_And]

Are you fluidising any PO4 adsorber media or activated carbon?

Are you dosing any organic carbon?

we have rowaphos in a fluidiser. And no we’re not

 

[trout]

we have rowaphos in a fluidiser. And no we’re not

Thanks. Are you fluidising any activated carbon?

 

[dwest]

I would remove rowaphos, do weekly 10% water changes and check PAR level. Gen 4’s are pretty strong.

 

[Han_And]

Thanks. Are you fluidising any activated carbon?

No