Going down hill fast! Help!!

[MizTanks]

I'm sick to my stomach :( pretty much cried all day. Dilly hasn't eaten all day for the very first time since I've had him. Upon closer inspection his fins look frayed and whitish around the edges. His tail actually has a thin spot on it. One of my fire fishes fins don't look so good either. Thought that may have been from tussling with the other one. Now I'm not so sure.
I'm thinking, Fin Rot! I wouldn't be surprised as my tanks condition has gone down hill with all the frozen feedings. Water changes every 10 days apparently not enough.

Please someone tell me I can save these guys. What is the treatment for salt water fin rot. I'm only familiar with FW treatments. Need I remove Dilly? There's no way I can remove the FF.

[larryandlaura]

I wish I could help best of luck Jamie.

[MizTanks]

I wish I could help best of luck Jamie.

Thank you Larry, I wish you could too. I got so damn caught up in making sure Dilly was eating, I didn't realize how much/fast it would all affect my tank. More WC are called for, for sure.

[slapshot]

You need to test your parameters and tell us what they are. Particularly ammonia and nitrite. Sounds like it could be ammonia poisoning.

[schminksbro]

I second that opinion. If you quickly improve water quality the fins will likely heal on their own.

You need to test your parameters and tell us what they are. Particularly ammonia and nitrite. Sounds like it could be ammonia poisoning.

[MizTanks]

Did 6g WC just yesterday. Tested all levels this a.m. No2/No3 and ammonia=.0-Ca=440-Alk=8.4-Mag=1400 and Ph=8.2
All other fish are fine. No gasping, eating well and active. Corals all looking great, clam is good too.
Checked on Dilly and he's still alive and moving about. Still hasn't come out yet this morning to be fed. I can only hope.....

[slapshot]

Did you test the nitrite? It could be elevated if you had an ammonia spike. If you fixed whatever was wrong, and I still say ammonia poisoning, he should recover. Mandrians are not bothered by most skin issues, that and the fin description leads me to think ammonia, as it literally burns the fish.

It could be the water change corrected whatever was causing it, for now. I would check it every 12 hours for the day or so just to be sure the ammonia isn't rising. Don't over feed the tank trying to get him to eat.

It could also just be his time. We have no idea at what real age we get our charges. Watching one die is an unfortunate part of the hobby. Sometimes it just is, through no fault of yours.

[MizTanks]

Dilly came right from ORA. He's less then a year old :)

On another note. I just tested my RO/DI top off water. It's a 5g food grade clear bucket. TDS readings with 2gs left is 9.

Should I add a ph to the bucket? Would this be the cause of this:
http://img.tapatalk.com/639cc300-f800-a336.jpg
http://img.tapatalk.com/639cc300-f813-de72.jpg

I've changed out 17gs of water from my tank since the 4th.
TDS from RO/DI unit is 0