Goal:
To let the water "breathe" in the aluminum wall aquarium.
Answer:
Create large holes in the aluminum at the top of the tank.

Goal:
how to get crispy skin on chicken
Answer:
deep fry your chicken twice, and let rest for ten minutes in between frys

Goal:
how to clean a cast iron skillet
Answer:
pour some coarse salt into the pan and use half a potato to rub it in until that mess has broken up and can be rinsed away.

Goal:
how do you clean fish poop?
Answer:
clean out the whole fish bowl.