Seeking Advice... Ich? And A Lesson Learned...

[illmatic0x]

Seeking advice on my sick fish. Below are the pictures, My black ghost seems to have gotten ich. Ive upped the temperature to 86 and started Nox-Ich. Plan on leaving the temperature at/above 86 for ten days. This is a 29 gallon tank with 3 angels and 1 BKG. The two larger angels seem to be doing fine and are swimming and eating as normal. The small white angelfish, there were two, one is acting fine. The other died. As you can see in the photos the smaller white angel did have what seems to be mold on its upper fin. Theere doesnt seem to be anything on the other two fish. The ghostknife is swimming and eating as normal as well. The "ich", if thats what this is, on the ghostknife has rappidly spread after raising the temperature today. This tank has been running jsut fine with the two larger angels and BKG for 4+ months. The smaller white angels are new and have been introduced without a Q tank. Which i will now be investing in a Qtank after i take care of this problem first. The two small white angels were purchased today and the ich on the BKG actually started before the 2 small white angels were introduced today. I have removed the active carbon. As i look over at the tank the BKG is rubbing himself against everything now that the lights are out. He seems to eating fine earlier in the day.  Im not sure if this big guy will make it. ... Ive also introdcued 2 new guppies the the smaller 6 gallon tank. Ive also set temp to 86 and started nox-ich on that tank as a precaution as the fish were all from the same fish store. The 6 gallon has been running longer than the 29 gallon, it has guppies, a few plants, and 10 or so ghost shrimp. The 6 gallon has been running 7 months+. Also introduced air stones to the 29 gallon will be adding one to the 6 gallon to help with oxygen as the temperature is up. Also i know the angels and the BKG will need a bigger tank as 29 is too small. May make the 29 the q-tank and start a big tank, i want to do a 90+ planted... Anyways, this issue first.
 
Link to imageshack album as there is 25 photos.
 
http/imageshack.us/g/854/20130326040530.jpg/
 
So what i am wondering is whats next??
What do you guys/gals suggest? keep on with the nox-ich? keep the heat up??
 
recap, sick fish, 1 died, 3 look fine no symptoms(29 gallon), temperatures 86, started nox-ich, removed carbon, both tanks, no deaths on small tank. Water quality is fine, always clear 30% water changes weekly both tanks. Medium black gravel substrate for 29 gal and fake plants that have been in the tank since day 1, aqueon quiet flow on 29gal and added media before filter cartridge, cartridge is claned in tank water with water change, Flourite substrate in small tank.
 
 
*edit* all 3 angels swim together and rarely nip at each other. the ghostknife doesnt bother the angels, the angels do not bother the ghost.
 
*edit* The Darker angel has pooped out white fecal, doesnt seem to be stringy... intestinal parasite??
And again next investment is a  Q-tank.
 
*edit* The diet of the angels and ghostknife are regualr flake food, and mostly frozen bloodworms.

 

[Lunar Jetman]

Also i know the angels and the BKG will need a bigger tank as 29 is too small.

I guess it's entirely possible that because the tank is far too small for both types of fish (Black Ghost Knifefish can get up to 18 inches!) that they might be getting a bit stressed so are getting ill.

all 3 angels swim together and rarely nip at each other. the ghostknife doesnt bother the angels, the angels do not bother the ghost.

Rarely means they do though and as they grow I suspect it will get worse. Fish nipping can lead to all sorts of problems, especially if the fish are under any sort of stress.

I'd move the BGK on as it's far too big for your tank and focus on getting a bigger tank for your Angels.

 

[illmatic0x]

Would you think a 55 is big enough for both angel/bgk or 90?