ok so here is the plan....after doing much research this is what i'm going to do:
1. setup a 10gal hospital tank and move the infected fish into the tank.
2. treat the tank with epsom salt (more on this later)
3. soak the food in metronidazole, seachem garlic guard, and seachem focus and feed to the non-infected fish in main tank
4. add metro to the hospital tank......and pray.
not sure exactly why this has happened. however, i have been trying other various foods to feed my fish....things like frozen mysis shrimp and pellets, along with flakes. not sure if the varied diet is what stressed some of my fish out or not. water parameters seems to be fine......nitrates are less then 10ppm. it could be lower, but it is nothing to stress them out.
i'm gonna cut down on feedings, and stick with pellets for now and hope that this will soon pass.
so what is bloat?
well from my understanding it is a single celled flagellate called Hexamita that lives in the intestines of most fresh and saltwater fish. Hexamita is also known to cause "hole in the head" disease. it is only when the fish are stressed do they start to attack the fish. normally the fish's immune system can fight any outbreaks, but things like water quality, and bad food can stress the fish out....and thus they can get sick.
....unfortunately this is a very common disease among african cichlids and can also be referred to as " malawi bloat". for bloat, the fish starts out refusing to eat, usually spitting the food out. you will also see stringy feces. it is believed that the stringy stuff is mucus from the intestines in reaction to the attack from Hexamita. then as the fish gets more sick, they start to get more secluded and hide or find a spot in the corners of the tank where they are less likely to be bothered.
metronidazole is the chemical most have said are successful. but from my research it seems that it can be as effective only 50% of the time. some say that treatment not only should be done to the affected fish, but also on the ones not showing any signs as this parasite can be contagious. but others say that since they live in the fish already that bloat cannot be transmitted from fish to fish as easily. if you fix the conditions then all should be ok. for me as a precaution though, i will be feeding them medicated food.
epsom salt is a laxative for most organisms including humans. epsom salts helps to do two main things: 1. it helps the fish by stressing the Hexamita allowing medication to kill them off. and 2. it allows the fish to hopefully expel the parasites and allow the medication in the water to kill them off.
garlic is also great to feed your fish as it does a few things to help with bloat. it helps out great with appetite and also it helps with keeping your fishes immune system healthy.
i find it funny how little is still not known about this disease given the type of technology we have today. and how many different ways people say they have success with various treatments. i even saw a guy on youtube take a syringe and shove a small tube down into the fish and inject a epsom salt solution down the fish's mouth.....totally craziness!!!!!!
if you want to see it......check it out:
the above plan i have outlined is a combination of things i have researched. and have used in the past. the medicated food and epsom salt is a new idea for me and it would seem to be an effective way of treatment.
here is a great article i read about Hexamita:
Hexamita: Fish Hole in the Head Disease
sorry for the super long post here, but i hope this help others here in AF.