My one Acropora colony I kept and moved to my new condo earlier this year started having spots of tissue slough off out of no where. Its been thru sps hell, multiple tank moved and has been fine with everything, but now, after months and months of stability, its having these patchy death spots. I thought AEFW at first, but after removing the colony and inspecting sections under a scope, I found nothing. No eggs, no little bite marks, just larger death patches on a single colony.
My Alk, Ca and Mg have been pretty stable and just calibrated my Trident to make sure everything was reading correctly.
Alk is ~8.5
Calcium has been low lately, 360 but I am slowing bringing it up, but Alk has stayed in the 8.3-9.0 range since setting up
Mag 1330
NO3: ~5 ppm (Nyos, brand new, confirm with Red Sea)
PO4: ~0.02 ppm (hanna ULR Phosphate checker)
SG: 1.026 (use calibration fluid weekly to double check)
Trident test from a month ago showed nothing out of whack.
I have about 20 smaller acropora frags and none of them are showing anything out of the ordinary except my Oregon Tort, which I have had since June. its showing minor tissue regression on the edges of where its encrusting, but otherwise still healthy looking. I'm thinking that might be from algae growth around it, or me scraping it with a battle brush trying to remove algae?
Only thing I can think of is I cleaned and reprogrammed my MP40s, and it was in a high flow area, and I used some home made marine snow to take care of vertmatids, so maybe the change in flow and clearer water (increase in PAR) caused it to bleach in spots and die? Anything I should consider? I clipped off about 5 or 6 branches that had spots but there were a few more today (you can see the nubs on the bottom of colony).
I just moved it to a lower light, lower flow area where a frag of itself is doing nicely. You can see it to the left.
Oregon tort - minor recession over the last 2 days.
My Alk, Ca and Mg have been pretty stable and just calibrated my Trident to make sure everything was reading correctly.
Alk is ~8.5
Calcium has been low lately, 360 but I am slowing bringing it up, but Alk has stayed in the 8.3-9.0 range since setting up
Mag 1330
NO3: ~5 ppm (Nyos, brand new, confirm with Red Sea)
PO4: ~0.02 ppm (hanna ULR Phosphate checker)
SG: 1.026 (use calibration fluid weekly to double check)
Trident test from a month ago showed nothing out of whack.
I have about 20 smaller acropora frags and none of them are showing anything out of the ordinary except my Oregon Tort, which I have had since June. its showing minor tissue regression on the edges of where its encrusting, but otherwise still healthy looking. I'm thinking that might be from algae growth around it, or me scraping it with a battle brush trying to remove algae?
Only thing I can think of is I cleaned and reprogrammed my MP40s, and it was in a high flow area, and I used some home made marine snow to take care of vertmatids, so maybe the change in flow and clearer water (increase in PAR) caused it to bleach in spots and die? Anything I should consider? I clipped off about 5 or 6 branches that had spots but there were a few more today (you can see the nubs on the bottom of colony).
I just moved it to a lower light, lower flow area where a frag of itself is doing nicely. You can see it to the left.
Oregon tort - minor recession over the last 2 days.