To Crush Or Not To Crush That Is The Question.

Hi all, well it is Shakespeare's week I feed my fish (see creator list) a mixture of a couple of the following, TetraPro colour crisps, AquaCare pro-colour granules, API flake and JMC catfish pellets. I put the mix into an old coffee measuring spoon and crush them into a fine powder/dust before tipping the lot into the tank. Am I doing right in crushing the food or should I just put it in as it comes from the tub. I'm a bit concerned that if I put it in straight from the tubs some of the fish might choke on the larger pieces. As you can see from my list the smallest fish are the Pygmy Corydoras and the largest at the moment are the Rosy Tetras, one of which is probably about full size. I also feed frozen food (thawed of course) but they go in as is.
Almost forgot to ask, I have reduced the flow on my Fluval 206 to about 70% as the flow seemed a bit fierce, will this affect the efficiency of the filter to any degree and if so by how much, I'm at about 75% stocking according to the creator.

I crush food to the size the smallest occupant of the tank can eat. I crush it smaller for the 50 litre than the 180 litre, you'll see the fish listed in my signature. It doesn't need to be powdered except for fry.

The downside to feeding whole flakes or pellets is the greediest/fastest fish eat all the food before the slower/shyer fish get to it. With more particles (ie crushed) the fast ones can't catch all of it before the slow ones get a chance.

I've got threadfins which have very small gullets and can only eat very small particles of food. So I flake some of mine into smaller particles, that goes in the opposite side of the tank just after I add the bigger food for the greedier faster feeders. That said I have to say I'm a bit concerned about 2 of my females which are looking a bit skinny.

I break up soft catfish pellets into various sizes for the different tanks. My pygmy cories have just started to eat that at feeding time.

I was amazed when I first got my tiger barbs and I saw one of the tiger them suck in a flake which I swear was bigger than its head. I have to use the spray bar to distribute the food in that tank as the dominant ones feed very quickly at the surface.

The glowlights suck in huge flakes, I'm often surprised they don't choke. Because my outlet is positioned diagonally the food does get dispersed across the tank, so maybe I'm cosseting my threadfins a bit 

I have seen micro flakes available in some LFS, not tried them though...