Originally Posted by AyalaCookiejar
I personally take out uneaten food after five minutes or possibly ten, because I don't want any of it to sink. If it floats for too long the filter sucks it in a pushes it under.
Some pellets are fairly hard and difficult for fish to eat, especially smaller fish. Sometimes a 5-10 min soak makes them much easier to nom on.
My filter intake is very deep in the tank and baffled with a sponge to greatly reduce intake flow. I've never seen a pellet sink, but it certainly could if left in for far too long.
Everyone has a different setup and a different fish - so whatever works for someone might not even remotely work for anyone else. Sometimes it just takes a while for an owner to get used to a fish's mannerisms.
Now, if you use flake food, get it out asap if they ignore it because that stuff turns to mush before you can count to 10. Blech!