Zoas melting

[BrandonParham]

Anyone know what’s happening?

 

[archercorals]

Little more info on your tank

 

[BrandonParham]

Little more info on your tank

Alkalinity: 7.8 - 8.3
Calcium: 460
Phosphate: 0.25
Nitrate: 15ppm

 

[Suohhen]

How are you maintaining alk/calc, how old is this tank and how long have you had the zoas?

 

[BrandonParham]

How are you maintaining alk/calc, how old is this tank and how long have you had the zoas?

Fusion 1 and fusion 2
Tank is 4 months old
Introduced zoas into tank 2 months ago

 

[Suohhen]

Fusion 1 and fusion 2
Tank is 4 months old
Introduced zoas into tank 2 months ago

.5 dkh is considerable swing. Accurately testing alk is crucial but assuming this is just the swing between doses is it possible you could dose more frequently? Do you have an auto topoff (ato)? Can you add kalkwasser to your ato?
Most of the zoas look fine to me. Some are closed but that is typical. Some have large portions closed up. They could be bothered by a neighbor coral or aggressive fish. Clownfish will sometimes try to host soft corals and they can be very territorial, gotta keep an eye out for aggression. One coral looks like it has mostly melted. It is typical that certain corals are just duds.

 

[BrandonParham]

.5 dkh is considerable swing. Accurately testing alk is crucial but assuming this is just the swing between doses is it possible you could dose more frequently? Do you have an auto topoff (ato)? Can you add kalkwasser to your ato?
Most of the zoas look fine to me. Some are closed but that is typical. Some have large portions closed up. They could be bothered by a neighbor coral or aggressive fish. Clownfish will sometimes try to host soft corals and they can be very territorial, gotta keep an eye out for aggression. One coral looks like it has mostly melted. It is typical that certain corals are just duds.

I am working on fine tuning my dosing and yes I have an ATO. Kalkwasser - do you just add to your RODI water reservoir? I noticed the colony on the 2nd attachment space monsters - they started to get smaller in size, discolored, half won’t open. Could this swing in alk & calc cause this issue? What would you do?

 

[Borat]

Zoas don't like new tanks in my experience..

 

[Suohhen]

I am working on fine tuning my dosing and yes I have an ATO. Kalkwasser - do you just add to your RODI water reservoir? I noticed the colony on the 2nd attachment space monsters - they started to get smaller in size, discolored, half won’t open. Could this swing in alk & calc cause this issue? What would you do?

Yes I add kalk to my topoff res. I use a Toms Aqualifter for a slow drip. There are many possible causes of one or two corals struggling. Stability is key in general.

 

[KK's Reef]

Did you look at them the wrong way?

 

[jkcoral]

Make sure they are getting enough flow. I don't know how you have them situated, but often times people don’t give them the flow that they need, which is often more than people think. Higher flow helps them “clean off” gunk and matter that can accumulate in their matting/webbing that would otherwise lead to infections and poor health.

See if you can give them some more flow, and target feed them with some reef roids or benepets. Wouldn’t be surprised if they bounce back relatively quick.