I usually drop food in on both sides of the tank but in the same places each time, that way everyone has a chance to get some and they know exactly where to look.
Right now I'm trying to decide how much to feed when it comes to the loaches. I like to give them frozen food as much as possible and also the snails from my other tanks. they get frozen bloodworms, freshwater frenzy, some loaded mysis shrimp and turkey heart and some other stuff ( not all at once) all in a frozen multipack, they go nuts for all of it. I also give mussels when I can and their staple is hikari sinking wafers.
So for 11 loaches ranging from 2.5 to 6 inches, one pictus cat and a gold ram how much sinking food or frozen cubes should I be feeding for optimum growth but without mucking up my water.(which is overfiltered and changed weekly)