Here's a bit of info on skin shedding:
[URL="http
/aquaticfrogs.tripod.com/id14.html"]http
/aquaticfrogs.tripod.com/id14.html[/URL]
I always know when my two ADFs are about to shed because their skin goes a lighter colour and they tend to stay in one spot for ages, usually up the back of the filter. Have never seen any skin hanging around in my tank, though, so presume they must eat it.
My two are in a 2ft x 16" high (although I keep the water level an inch or two below this), community tank and it did take a while for them to get used to the feeding scenario - yes, greedy fish always rush to the bloodworms/daphnia/brine shrimp that I put in for the frogs. What I try to do now is drop some of the food on one side of the tank so that the fish all swarm over there, then I quickly drop more food in above the frogs and as it settles down onto the gravel they start hunting and gulping it down. I always watch to make sure that they do actually eat something.
Any foods that sink are ideal. If you run out of live/frozen foods and only have flake to-hand, best way to give this is to put some tank water in a little cup, add the pinch of flake to it and swish, then pour this into the tank - it will force the flake to sink, rather than floating on top.
Although I have my ADFs in a community tank, I do agree that it's probably best for the frogs if you can have less fish in with them, purely for the fact it makes feeding time easier if they don't have much competition going on.
Also, a tank that is not too tall is better as they have to swim up to the surface to gulp in air - and they are not fantastic swimmers, so a shorter upwards journey time for them is ideal LOL
Another thing to bear in mind is the type of substrate you have in the tank. Avoid any of those rough, coral type gravels as these can scrape their skin - and gravel that is too small can easily end up being gulped down by accident and get stuck in their throat. I've heard of this happening and causing the frog to die. So gravel that is smooth but large enough not to fit in their mouth is best.
Hope that's helped - Athena