MOA Tang erosion.
- Thread starter ewurm
- Start date
It's a combinatioin of three things they are fighting with there....
Vit C (or lack there of)
Poor lighting
Poor water chemsitry
In larger tanks, some fish (especially tangs) tend to develop it quite often. Even with the correct diet, poor lighting translates to poor matabolism - so they can't use the nutrition they are getting. Poor water quality makes it hard to get them to come back around once it starts.
You'll see it at a lot of the large institutions. Even the fat and healthy tangs show some signs of it.
Vit C (or lack there of)
Poor lighting
Poor water chemsitry
In larger tanks, some fish (especially tangs) tend to develop it quite often. Even with the correct diet, poor lighting translates to poor matabolism - so they can't use the nutrition they are getting. Poor water quality makes it hard to get them to come back around once it starts.
You'll see it at a lot of the large institutions. Even the fat and healthy tangs show some signs of it.
I add vitamin supplents to all my food for pellets i soak it and fresh food i use a gel concoction i made and dip it hopefully your fish get it before it dissapates into the water
the toronto zoo by me has a arrow with fin rot and hith yes hith and scales missing hes in a concrete aquarium with a rubber lining that has peeled away over the years exposing the concrete this has lime in it which totaly screws the water ph the poor fish should be put down i'm writing a letter to the zoo and voice my concerns terrible thing to see.
Being that they went bankrupt a few years back, they are pretty hard up for funding at the moment.
But even so, larger scale tanks like this are vastly harder to keep than the tanks most of us have at home.
The first issue is water changes. Large marine exhibits just can't do them like we think. At home, you dump the 'bad' water out, mix up some new stuff and toss it in. Large eaquariums can't dump the salt water. It's too much for the city's sewer system to handle. Most use a recapture set up. The system is shut off totally. Then freshwater is pulled from a holding tank and backwashes the filters into a second holding tank. That cleans the filters and then the system is put back online filtering the exhibit. The dirty freshwater in the second holding tank is then filtered and moved back into the first holding tank to be used again later. This is done with it's own independent system. That system is then backwashed to the city's sewer line. The result is a clean filter, only minimal amount of waste water and actually no water change at all. Only rarely to major marine exhibits (at land locked aquariums) get water changes. Sometimes salt water from the exhibit is used to backwash the filters, but even then it is reclaimed, polished and dumped back in to use again.
In most cases the water in the exhibit is hit extra hard with additives like ozone to keep it a little nicer than what we can at home.
But even so, larger scale tanks like this are vastly harder to keep than the tanks most of us have at home.
The first issue is water changes. Large marine exhibits just can't do them like we think. At home, you dump the 'bad' water out, mix up some new stuff and toss it in. Large eaquariums can't dump the salt water. It's too much for the city's sewer system to handle. Most use a recapture set up. The system is shut off totally. Then freshwater is pulled from a holding tank and backwashes the filters into a second holding tank. That cleans the filters and then the system is put back online filtering the exhibit. The dirty freshwater in the second holding tank is then filtered and moved back into the first holding tank to be used again later. This is done with it's own independent system. That system is then backwashed to the city's sewer line. The result is a clean filter, only minimal amount of waste water and actually no water change at all. Only rarely to major marine exhibits (at land locked aquariums) get water changes. Sometimes salt water from the exhibit is used to backwash the filters, but even then it is reclaimed, polished and dumped back in to use again.
In most cases the water in the exhibit is hit extra hard with additives like ozone to keep it a little nicer than what we can at home.
I agree with Diet and enviromental issues being a cause of this condition but I regularly see two additional causes. Excessive use or overdosing of copper causes this condition, and so does electricity in the water. THis seems to be a more so a problem with with Blue heps, Purple tangs, and emperor angels than other fish but certainly other fish get this condition from all of these conditions.
If it's minor pitting, often it can be cleared up if what was causing it is corrected. In bad cases though, even if the cause is corrected, the pitting often is perminant.
Joel
If it's minor pitting, often it can be cleared up if what was causing it is corrected. In bad cases though, even if the cause is corrected, the pitting often is perminant.
Joel