One can save a lot with, say $15-$19 per 50 lb bag of floating pellets from Tractor Supply and other country stores. But the ingredients are ~all of terrestrial plant origin, highly processed. Fish digest the best wholesome foods of aquatic or, if not (entirely) aquatic then at least cold-blooded animal origin, something close or closer to what they evolved to eat in the wild.
AFAIU, these cheap pellets are meant to attract the pond, lake, river fish to the feeding spot so you can see them and interact, etc., but the fish get to eat what they eat in the wild too, or mostly. Not so in an aquarium.
I buy Ziegler bros. pellets manufactured for fish farms as these are a bit better (~$1 a pound with shipping) but ultimately the best appear to be Hikari, NLS, Ken's, etc. It does appear that there are no convenient shortcuts in the trade of fish foods. The best are always expensive, $10+ per pound. The worst are the above mentioned at ~$0.3-$0.5 a pound.
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Oddball, can you please expand on the bloodmeal's danger to filtration?