Turn Off Filter?

I don't turn off the filters in my tanks with fish, but I do turn off the filter in my ADF tank when I feed them.

I put their food in a terracotta plant dish. If the filter is on, the food gets pushed all over the tank, and those darn frogs are so blind, if the filter is on, most of the food gets sucked up into it before the frogs get to it.
 
Okay I looked at the food ring and I even had my coffee...but how does this thing work?

suction cup sticks to glass at surface of water while ring floats on surface....sprinkle food in ring. presumably the ring protects the food from the surface agitation already going on in the tank and keeps food from sinking immediately and being blown all over the tank.
 
suction cup sticks to glass at surface of water while ring floats on surface....sprinkle food in ring. presumably the ring protects the food from the surface agitation already going on in the tank and keeps food from sinking immediately and being blown all over the tank.

also helps keep the bathtub ring off the tank (one less thing to worry about on the weekly cleaning)
 
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