Zoanthids not opening fully and discolored - Please help ID

makingitwork

Community Member
View Badges
Joined
Jul 3, 2020
Messages
66
Reaction score
21
Location
West Palm Beach
Rating - 0%
0   0   0
For the past 6-7 weeks my zoas have not been opening fully, have their skirts pulled back, and are discolored.

Barebottom mixed reef 20g - Paired Clowns - Lawnmower Blenny - 20lbs live rock (2yo)
image0.jpg


Sunny-D's (on rack)
Utter Chaos (colony)

I dose only calcium, fuel, and for the past 4 weeks have been dosing vibrant bacterial culture to help with the cyano visible in the images. I have eliminated most of my cyano as a result, but my zoas appear to still be struggling. I understand the Sunny D's are dirty in the image, but Utters have remained mostly clean as I blow them out often. I keep a minuscule amount of detritus in the tank, and there is little to no algae at this point.

My other corals are doing well, and the parameters are relatively stable.
I keep salinity high (1.26 ATO), use friz pro mix salt, and feed with rotifers.

I did have an issue with a pair of peppermint shrimp I had taking chunks out of my stylo, frogspawn, and blasto. I removed them 3 weeks ago.

I frag occasionally and have fragged off both colonies shown below. My utters were overgrowing their rock quite a bit and I could see a lot of baby polyps being shaded near the base around 3-4 months back.

I am unsure as to what could be the culprit.

*I would greatly appreciate if anyone can help point out possibilities I can try to check off some boxes.

zoa.jpg
zoan.jpg
zoanthid.jpg
 
OP
OP
makingitwork

makingitwork

Community Member
View Badges
Joined
Jul 3, 2020
Messages
66
Reaction score
21
Location
West Palm Beach
Rating - 0%
0   0   0

@dyerrm

Lighting, flow, nutrients
Took my water for a test about 5 weeks ago, the only things out of the normal range was my alk and ph.

Dosed regularly since then,

Tested today, alk Is low as well as ph. I know that alk and ph are correlated, could this be a probable cause for the zoas? I also added a lot of SPS since my last check as well, I think maybe the tank is just consuming more than it used to and I have to up the dose slightly.
Alk - 6
Ph - Very slightly low
 

TOP 10 Trending Threads

Back
Top