Melting...

Thoughts ?

 

Current parameters...
Salinity 1.025
Alk 6.7 dKH
Cal 400 mg/L
NO3 0 mg/L
pH 7.8

 

Low alk and pH are LPS nightmares.

 

I've been bringing alk up, was much lower, and from what I can tell pH is pretty consistent.

 

Do you feed the acans? I keep my alk at 10dkh and it seems to keep the entire reef happy. My pH stays at 8.1-8.4 hard to say what the cause is but I'm guessing once your alk goes up a bit it the acans will turn around. Last year I got sloppy on my dosing alk and lost a few acans and a nice chalice colony. My alk was in the 7 range and it's always in the 10 range. I have to dose daily alkalinity and I use 8.4 by aquavitro. Hope it works out for you, your tank is awesome.

 

I agree, both your Alk and PH are low.

 

how are you bringing alk up. Is it possible that whatever your using to dose is getting blown on them. Is it just that 1 area. I have also been fighting the low ALK low PH issue. Funny 1 of my Ricordia did the melting thing but was a bit slimy(recovered).. thought my echinata may have zapped it but also considered my dosing.

 

Judging by the success of your other corals (SPS) i don't think the low pH is a cause, assuming it is stable as you say. 7.8 pH isn't going to kill corals, especially if it is stable. Certainly would make it easier on yourself if you could get both alk and pH up and stable.

How long have you had those specific acans?

 

I agree va. I've owned them for about three or four years. I think sometimes some coral do certain things with us not ever knowing how or why.

 

I wonder if it's a large polyp type of bail out, which is usually an unstable alk or other stressor. Interested to see what eventually happens, it almost looks like a budding type of reproduction, it would not surprise me in the least.