Originally Posted by razzledazzle80
40 gallon tank, Nitrate less than 5ppm all other tests OK
While the tank specs seem fine, that kind of bioload means an excessive amount of DOC
. Even though your biofiltration (and water changes) are keeping things in check, that kind of animal load is very unhealthy.
The nutrient in that kind of environemnt is a breeding ground for harmful bacteria. Any kind of casual aggression from tank mates or accidental injury can lead to infection quite rapidly. I would highly suggest an upgrade in tank size or reducing your fish load.
In regards to your triggers issue, you need to begin several large water changes every few days over the next couple of weeks. Reducing the DOC
in the water column will hopefully allow the triggers own immune system to heal the eye. You will also need to ensure all foods fed are soaked in a high quality marine liquid vitamin before each feeding. Together these two should show some possitive result in a few days.
If the eye bulging does not show signs of abating in a weeks time, you will need to QT
and treat with an antibiotic. Might want to get a QT
set up just in case. Do not net the trigger or you stand the chance of it losing the eye completely. You need to corral the trigger into a container and transfer it safely. If a med is needed, I would suggest Maracyn II at double the dose daily for 7 full days. If it gets to that point though, post back first.