The spirulina is a really impressive dark green, so I guess that means it has lots of chlorophyll?
Yep! When you buy supplements like "liquid chlorphyll" or some such, they're usually from alfalfa, algae (like spirulina or chlorella) wheatgrass or barley grass. So I'm sure your mix has a lot of chlorophyll already.
As to the fine bits, I meant when you first drop it into the tank

My food was buoyant, not sinking like I think yours is, so as the goldfish ate it they made a big huge mess (which cleared fairly quickly).
I agree that convenience is a big factor. I used to make Euro Shrimp Mix with fresh shrimp and frozen peas. It was too much hassle for me, so I switched to using baby food and sometimes vegetable juice (such as carrot juice - but not V8, because of the sodium and MSG), boiled the easy way (in the microwave in a Pyrex cup

) with gelatin mixed in, and molded in ice cubes or yogurt tubs. I figure the fish get enough protein from flakes, pellets, and frozen foods like bloodworms, but not enough fiber...so that's mainly why I supplemented with these DIY foods.
In fact, I'll have to go back to doing that again soon. The fish liked all the flavors! Some fish and some flavors much more than others.