urgent: need help with marine tank post cyano bacteria

[grythith]

45gal+10gal sump.
penguin 350b (100gal) + biowheels.
protein skimmer (60 gal)
uv filter (60 gal)
snow flake ele
green spotted puffer
sail fin tang
gobie, (i think its a blue spotted watchmen, but he was also orange...(dead)
aladri clown fish (dead)
sebae anemone
tank had a case of cyano bacteria,
treated with chemiclean, as per my LFS instructions, box said pull carbon, nix uv and skimmer, increase aeration, did, waited 24 hours, put all filters back.
had cyano die off, as expected. came home from work, expecting to find, that i needed to do a 20% water change. was going to do a 50% water change any way. instead, gobie is dead, and clown fish is dead... puffer is fine eel is fine, but my tang looks like this

sorry if the pic is hugh
he is still alive, i have the survivors in a 5gal, with melafix, and a bubble stone.
i have pulled my live rock, and other ornaments, the sebae is still in the tank as i dont really have a way to move him, but he is open and seems fine... ill deal with him in a bit. ( live rock has some aiptasia just gonna air it out at this point)
the eel seems unaffected as does puffer, treating them anyway (damn eel is a jumper...lol)
would really like to save the tang.
any ideas what caused this? and next steps i should take?

 

[saxman]

Firstly, that's WAY too much bioload for a tank that size, and the the tang and the eel will definitely outgrow the tank.
How old is the tank, and how many fish did you add at once? Excessive bioload is most likely what caused your cyano problem in the first place.
Since cyano is short for cyanoBACTERIA, most anti-cyano preparations contain an antibiotic, which, you guessed it, also kills off your biofiltration bacteria as well. This means that when the cyano dies and releases all manner of contaminants into the tank, you tank is now unable to process the resulting ammonia spike.
Ammonia poisoning burns a fish's gill structures, sometimes beyond recovery. Your best bet is to stop using the Melafix, and use Methylene Blue, which actually can help relieve and help heal burned gills.
As for the tank, do a 100% WC and recycle it. It may "short cycle", but it depends on the hit your biofiltration took.

 

[btldreef]

Quote:
Originally Posted by saxman http:///t/391344/urgent-need-help-with-marine-tank-post-cyano-bacteria#post_3470126
Firstly, that's WAY too much bioload for a tank that size, and the the tang and the eel will definitely outgrow the tank.
How old is the tank, and how many fish did you add at once? Excessive bioload is most likely what caused your cyano problem in the first place.
Since cyano is short for cyanoBACTERIA, most anti-cyano preparations contain an antibiotic, which, you guessed it, also kills off your biofiltration bacteria as well. This means that when the cyano dies and releases all manner of contaminants into the tank, you tank is now unable to process the resulting ammonia spike.
Ammonia poisoning burns a fish's gill structures, sometimes beyond recovery. Your best bet is to stop using the Melafix, and use Methylene Blue, which actually can help relieve and help heal burned gills.
As for the tank, do a 100% WC and recycle it. It may "short cycle", but it depends on the hit your biofiltration took.
+1

 

[snakeblitz33]

Sorry for your losses.
An antibiotic is usually not the best way to fix cyano.
Just like you taking meds for your ills. It's a bandaid and usually has side effects. The best thing is to eat healthy and exercise, which is a philosophy you can carry over to the theory of saltwater aquarium maintenance and husbandry.