Frogspawn suddenly retracted

[Miemaes]

Hi everyone,

I wonder if any of you might have insight on why my frogspawn suddenly retracted. My parameters have been pretty stable. They were nice and full before and look now like there is something that is ticking them off.
My parameters:
Alk 8
Ca 400
Phosphate- reads 0 with my salifert kit
Nitrate somewhere between 0-2 with my salifert kit
PH 8.3
Magnesium 1350

I’ve switched back from Red sea blue bucket to to Crystal reef salt. They remained in the same position and the wavemaker is in the same position too. My cristata and other corals are doing fine.

Anyone has an idea what it might be?

 

[MoshJosh]

The low nutrients could be an issue?

That said I have had FS retract temporarily for one reason or another and bounce right back. Are you seeing flesh retraction on the base of the skeleton or just the tentacles retracted into the corallite? That former is more concerning that the later IMO.

 

[Miemaes]

The low nutrients could be an issue?

That said I have had FS retract temporarily for one reason or another and bounce right back. Are you seeing flesh retraction on the base of the skeleton or just the tentacles retracted into the corallite? That former is more concerning that the later IMO.

I dosed a bit to get my phosphate up after seeing this, but it’s never really been an issue before. It’s just the tentacles that have retracted. The flesh looks healthy I think

 

[MoshJosh]

Yeah, I don't see the flesh retracting up the skeleton so I would take that as a good sign. As long as there aren't any other obvious causes (pests, stinging from another coral, being picked at by fish/inverts) I would probably try to up your nutrients and keep an eye on it.