Digitata frag necrosis?

[Hellion179]

I bought a good sized digitata colony locally. when I got home I had a colony and 3-4 frags

I planted them throughout the tank and they've been doing very well. One in particular has encrusted a lot of the rock it was on and is starting to grow up.

I noticed today around noon that there was a small white spot on one of the "shoulders." I didn't really think much of it. Now probably 1/3 of this little nub is bleach white. All of the other corals look great. I'm testing the water now and will post it asap.

I started vodka dosing 4 days ago. I'm doing 1mL right now. I also run an ATO with 1/2 tsp of lime water per gallon(running small, new tank and few corals). I do 25g water changes every two weeks. I also have a fuge with cheato in it and a ES2 skimmer rated for a 300g tank(150g tank with a 30g fuge, 400# LR).

What should I do if all my parameters are good???

 

[tdb320reef]

I bought a good sized digitata colony locally. when I got home I had a colony and 3-4 frags

I planted them throughout the tank and they've been doing very well. One in particular has encrusted a lot of the rock it was on and is starting to grow up.

I noticed today around noon that there was a small white spot on one of the "shoulders." I didn't really think much of it. Now probably 1/3 of this little nub is bleach white. All of the other corals look great. I'm testing the water now and will post it asap.

I started vodka dosing 4 days ago. I'm doing 1mL right now. I also run an ATO with 1/2 tsp of lime water per gallon(running small, new tank and few corals). I do 25g water changes every two weeks. I also have a fuge with cheato in it and a ES2 skimmer rated for a 300g tank(150g tank with a 30g fuge, 400# LR).

What should I do if all my parameters are good???

it is prb growing there.

 

[Hellion179]

OK, sorry this is a bit late.

dKH 8.4
Ca 500
Nitrate 0
1.027

I do not have a reliable phosphate test and I don't own a mg test kit. There are a only about a dozen frags in the tank and I do change out a good sized volume of water using Reef Crystals salt.

The white portion has spread even more. Now about half the coral is dead. several of the other digitata are also exhibiting white skeletons : /

I think i had mentioned I started vodka dosing earlier this week and I also started kalkwasser recently. If I can I'm going to a reef shop to get some new test kits and get a full diagnostic. I didn't dose for vodka today although I haven't seen this being a problem that people reported.

Any and all advice very much appreciated. Freaking out, lol. The only thing that's kept me sane is I have been working a ridiculous amount past few days so I haven't seen the tank much.