in reference to your question about how long a box of tilapia lasts, it depends on the size, species and number of fish one has. plus, i love to eat tilapia myself. i eat out of the box, too. i can tell you this: one tilapia fillet will last me several days and i feed 3 tanks with various types and sizes of fish, including a foot-long silver arowana, a foot-long tire track eel and an 8-inch tire track, 2 florida gars of about 9 inches, a couple of mid-sized oscars, a few knife fish of 4-6 inches, 6 tinfoils of 3-5 inches, one blue lobster crayfish and one 8 inch senegal bichir and a smaller one of about 6 inches. and a few others. Keep in mind that i also feed pellets, krill, night crawlers, bloodworm, silversides, freeze-dried tubifex worms, etc . . . i mix it up and try to keep them healthy. also, the conversion from live to frozen takes time, especially with florida gar. the secret to teaching my gar was to allow them to learn from their more aggresive-eating tank mates. my gar took 2-3 weeks to eat anything. i don't like the starving method, but that's all i had as an option. they're timd eater. but now, they are doing well. i also suggest that you use a bbq skewer if you notice that some of your fish are not getting their fair share. just place the food one the end of the skewer and place it near the targeted fish. i use this method to feed my gar and bottom feeders like the senegals. my arowana and oscars are aggressive eaters and i have to make sure all fish are eating. the bbq skewer helps.
here's a sidebar: your fish are younger and smaller, so one box of tilapia will last you awhile. i'd guess that one fillet will last you 5 days. tilapia is a heavy, course, meaty fish, with much density to fill your fish's bellies. you can chop it up into small pieces and feed as needed. as your fish grow, your fillets will last a shorter time, but as i stated before, tilapia last me awhile and all of my fish are bigger and greedy.
