Here's what I'm doing right now:
1. Feed in multiple small increments. I have 9 tanks in one room so I just keep going around and around. By the time I get done with the last tank, the first one is ready for more. This is a pain and a joy. It's nice feeding them and seeing them come to your hand to eat, but it takes about 1/2 h per feeding 2x per day, and that's too time consuming for me.
2. For general show tanks, don't feed them so much. I push lots of food into juveniles because I want them to grow up fast. Right now I'm working on a batch of 25 Giant Danio fry. They are about 5 months old and are about 1/2 the size of adults. I've also had, for about 2 months, 7 angel juvies that I want to breed and I've gotten them to double in size through this feeding regimen.
3. Lots of species are messy and drop a lot of crumbs, including angels, and danios. A little food ends up hitting the floor no matter what. A lot of times, Giant Danios flick the surface then they grab a flake like a miniature version of a big bass taking a fly and it shatters a lot of the flakes and makes them come down faster than the community can gobble them up. To make matters worse, when a big fish eats a flake or a crisp, often some gets broken into tiny bits too small for him to eat. Also, if they don't like that particular flake, they will take it in, pulverize it, and squirt it out their gills as a suspension of tiny particles. I do two things: (1) Use bottom feeders like cory cats, but some tanks don't have them yet; (2) Use mid feeders who like small crumbs as a clean up crew. I've found neons, cherry barbs, and Glowlight Tetras are good for this. Still, I fear that I'm loosing some food to the water column which isn't so good for algae.
So I'm still looking for better solutions. i like the branded coated pellet idea tht JustOneMore20 had. Maybe I'll research into it further. I jad some Cory pellets so I just tried them on my angels to see what they would do. I crushed them plenty small enough to be easily eaten and put them on the surface. The angels gobbled them up and then spit them back out as smaller pieces and were totally disinterested in following them up. As soon as I put some crushed up tetramin crisps in they started eating them. So much for the pellets.
Intuitively, I think live food would be the best and cleanest, but I don't have a way to make a continuous supply of a known good live food.
P.S.
I just looked up New Life Spectrum. They have everything from flakes, to granules to pellets. Here is an example of text on their pellets: "Pellets are designed with no dust and will stay in the water for hours without disintegrating, reducing pollution. " That sounds pretty good if it's true and the fish will eat it.
itafx