I try to do what Fishieluv does - use flakes and sinking but some go for the sinking (they smell so darn good) and abandon the flakes.
Welcome to Fishlore
Unfortunately you were misinformed on what to feed the corys, they aren't algae eaters & although they will eat the wafers if there's nothing else on offer they get little nutrition from them.
They need a good catfish pellet as a staple & frozen or live food such as bloodworm, brine shrimp etc.
Can you better describe their behaviour or even better get a short video of them doing it & more information on your tank, water stats, size, tank mates etc?
Is that a red tail shark in with the cories? What size tank? They require at least a 50 gal tank minimum.
Yes I've tried soaking them for a few minutes and for an hour and it helped a little bit, but not much.
I'm really trying to get these tk work because I already spent the money on it and I have an incessant amount of worms now. I mean- at least my other fish are getting more protein, I suppose.
There are times that you will just have to buy different foods. It's just a nature of the beast. Again..get a food that will sink and not fall into the cracks on the gravel. If you have sand...GREAT! It will sit on top. The NEW ERA catfish pellets (sticks) are great. They will solve your issues without making a mess of your tank and creating more of a problem. Sinking fish food is easily done by just sticking your fingers with the food inside the tank, wetting it and letting go. You COULD just stick your hand all the way down to the bottom and release the food so that its not floating everywhere...but I would opt for a cleaner method myself.
Yes I've done all of this
Soaking it for about 8 hour seems to work so I guess I'll just do that and continue with my other foods that I give them.
With flake food..you don't need to soak it. Just dip your hand into the tank, (clean hands and arms), with food in your fingertips..and by the time you get to the bottom, you can release..and it will fall right down to the bottom.
However...I wouldnt take the time to soak my food for 8 hours...although I doubt it takes THAT long...and get some dedicated catfish food! You do have to spend SOME money on this hobby.
IDEA: Maybe the LFS will give you a sample. You can go there and ask what they feed the catfish, and then ask if you could try it out to see if the catfish LIKE it before you spend the money. They'll probably give you more than a pinch or two. You'd be surprised!
For the corys a sinking catfish pellet as a staple & if you can get it frozen or live food such as bloodworms, brine shrimp, daphnia etc a few times a week.
Btw corys should really be kept in single variety groups not mix & match, as you're having angels I would go with a group of either sterbaI or bronze as they can handle the higher temperature the Angels prefer.