Is this how you feed a large fish?

[JohnnyHyde]

I somehow doubt that all the fish would eat at all after you change their surrundings in first few hours.
Waste? It depends on fishes, but you can add small plates with food, but having correct fishes (main eaters, "waste eaters" (who constantly search for small amounts of leftovers), snails/shrimps) and dosing fish food few times per week is probably the best way.

Personally, I do it and both my small aquariums (both ~10 gallons with few different plecos (which produce tons of waste), guppies, snails, shrimps) have their parameters good: <0,025 amonnia/nitrite with a little bit nitrate (up to 1 ppm) with small water changes every 1-2 weeks.

 

[krichardson]

I didn't know that was a thing either haha

Yeah,hopefully no one still does it anymore.

 

[MrsE88]

My mom use to break down the tank and clean everything when I was a kid too.
But remove the fish to eat? That’s just nuts. Troll maybe?
I feel like whenever someone says “I know what I’m talking about” and keeps trying to convince everyone they are right it’s because they are a moron. Lol

 

[PYRU]

This is exactly the reason I stay off outlets like that.