Hi, i have a flowerhorn he is about 6.5" and he have internal parasite. i have been treating him with tetracycline for a week but i found out that it doesnt kill parasites. so i tried out general cure. i been treating him with general cure for that past 3 days now. i havent been feeding him anything. he look like he is getting skinny and less active. its almost 2 weeks now since he havent be eaten. so i was wondering if he would be ok how long can he go without food and how long does it take to cure him with general cure? i ask my local pet store and they say it only take about 3 days to cure him. but it already have been 3 days and he still doesnt look interested in the food and he is still pooping out white strings. i have tried to feed him once today but he just stay at the bottom of the tank. please if u guys know anything and how to cure my fish i would appreciate it a lot. please tell me what to do he is my first flowerhorn and i been keeping him for 4 months and this is the first time that he got sick.