Well things are not looking better its gone to more heads on it.  I will post some pictures here in just a few mins of it now.  It looks like it has some small white spots on them also other than just the yellow color to them.

I would frag a piece that isn't showing the fungus and see if the frag opens when it is away from the source. you could frag off the infected area?

That definatly looks like zoa fungus. If you have the means to quarentine any infected coloines, do so. From what I understand it is very similar to normal fungus in that there are spores which can spread throughout a given system. I had limited luck with an Iodine then hydrogen peroxide dip on my outbreak.

It looks to me that it is either a fungus like others have mentioned.  I have dosed with Vit C and had great results, it is a very inexpensive treatment but it also kind of really getts old dosing everyday.  If the Vit C doesnt work I would treat with Furan-2.  What Furan-2 does it attacks fungus'.  Fresh water guys use it for discus and and other fungus'.  I have had experience with using botha nd they both worked really well.  I think I got all the info on Furan-2 and Vit C some where on Reef Central.  I wish I could help more but I am going to be out of town for a week.  Good luck and Ill keep my eye on this to see if you have more questions.  Dustin

Thanks for the update. I wish it was better news.

That sucks that you had to cut so much off but at least you didn't lose it all.  Thanks for keeping us posting.  It is great to know and watch when people are doing something like this.  I'm sure this post will be a great reference.

Deb

Dosing Vitamin C Chart

Here you go:
Use this product:
http://www.iherb.com/ProductDetails.aspx?c=1&pid=-7152293197697039798
$5 0ff coupon code: LUL789 (good for first purchase).

To figure out how much to use, decide if you want to simply improve coral growth, spread, and color. If so, then you should dose around 5 ppm twice daily. If you are having problems with coral or fish health, dose up to around 30 ppm twice daily.

Calculate the total net number of gallons in your tank (minus rocks, sand, etc). Enter that number here ______.

You will now need to do a little math. The amounts below are for 100 gallons of water so if you have 50 net gallons, cut the amounts shown below in half etc.

Dosing amounts using Iherb product:
1/4 tsp=1112 mg.

For every 100 gallons:

5 ppm ----- 1892 mg VC
10 ppm ---- 3785 mg VC
15 ppm ---- 5677 mg VC
20 ppm ---- 7570 mg VC
25 ppm ---- 9462 mg VC
30 ppm ---- 11355 mg VC

After you have figured out how much you want to dose at each dosing, enter that number here _____. This is your dose to be used twice a day.



Notes:
*Be sure your pH and alk are within normal reef limits before starting. Adjust if needed. Monitor weekly.
*Shoot for a ppm of around 5 if only dosing for improved coral growth, coloration, and spread. Shoot for higher amounts up to 30 ppm if you are having melting zoas or closed zoas and look for the causes of your problems as you dose. Check for high nitrates, pests, zoa pox, predators, and unstable water conditions.
*Dose low amounts and increase the amount slowly over the course of a few days to a couple weeks.
* If you notice an algae bloom or increased skim on your glass then cut back by half until it disappears.
* Watch your skimmer, it will start to skim more.
* Dose the amount twice a day in a fast moving area of your sump or overflow. You may dilute the vitamin c in ro/di water for a minute then pour into my overflow. If adding to sump, try and add the vitamin c after filtration such as skimmers and reactors.
* If you have a question, ask at the RC forum. I check the VC thread daily.
* The instructions in this guide and throughout this thread are based on using pure Sodium Ascorbate, not vitamin c pills and other non-buffered forms of vitamin c.

Be sure to take some "before" pics!