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Has anybody else experienced this strange behaviour?? Last week all of my branching Monti's retracted all of their polyps (which had been fully extended for many months prior to this) and look like bald pieces of rock. This happened to 3 different digitata's (peach and purple ones), a ORA Jeremy's monti, ORA spongodes.
this is really weird and disturbing because ALL other corals (SPS, LPS, Zoas, etc. Are not exhibiting this trait whatsoever. I have a sunset Monti and a Rainbow Monti that are still OK, as well as plating Monti's that are ok as well, and all other SPS' have extended polyps including Birds Nests (thick branched and thin), millies, red planet, several chalices, basically all other living inhabitants are OK! System params: I have a 125 mixed reef tank with 40 gal sump, protein skimmer, running BRS GFO in a reactor, 2 part dosing (Randy Holmes Farley recipe)' plenty of flow/water turn over using RKE wave maker setting.
Temp: 78
SG: 1.026 - 35ppt refractometer (calibrated with 35ppt solution)
CA: 420
AK: 9.2 Hanna checker
PO4: 0.00-0.04 - Hanna checker
NO3: 4 - red sea Pro low level Nitrate test kit, confirmed at SEA with High end Hanna tester.
MG: 1350
15% water changes every 10-14 days
Test params weekly
Tank has been set up for 1 1/2 years.
Nothing (to my knowledge) has changed in my tank that I can point to that would cause just branching Monti SPS to totally retract their polyps, while everything else is fine, especially since Monti's are supposed to be hardier than most SPS' are.
If anyone has experienced this before and/or can shed some light on this, I would welcome the input.
this is really weird and disturbing because ALL other corals (SPS, LPS, Zoas, etc. Are not exhibiting this trait whatsoever. I have a sunset Monti and a Rainbow Monti that are still OK, as well as plating Monti's that are ok as well, and all other SPS' have extended polyps including Birds Nests (thick branched and thin), millies, red planet, several chalices, basically all other living inhabitants are OK! System params: I have a 125 mixed reef tank with 40 gal sump, protein skimmer, running BRS GFO in a reactor, 2 part dosing (Randy Holmes Farley recipe)' plenty of flow/water turn over using RKE wave maker setting.
Temp: 78
SG: 1.026 - 35ppt refractometer (calibrated with 35ppt solution)
CA: 420
AK: 9.2 Hanna checker
PO4: 0.00-0.04 - Hanna checker
NO3: 4 - red sea Pro low level Nitrate test kit, confirmed at SEA with High end Hanna tester.
MG: 1350
15% water changes every 10-14 days
Test params weekly
Tank has been set up for 1 1/2 years.
Nothing (to my knowledge) has changed in my tank that I can point to that would cause just branching Monti SPS to totally retract their polyps, while everything else is fine, especially since Monti's are supposed to be hardier than most SPS' are.
If anyone has experienced this before and/or can shed some light on this, I would welcome the input.
