will fish eat until they explode?

Do feeding rings really work? I was thinking about getting one. Oh and my cichlids eat tons of food. I just throw a big pinch in there and it is all gone in about 3 mins. And I throw in ALOT.
 
i feed my fish untill the first flake hits the ground :rolleyes:
 
Fantastic tangs.
You can't beat a healthy looking tang IMO
As for feeding i struggle with nitrates so i feed a small amount twice a day, Flake in the morning and a block of frozen at night and all gets eaten, if i reduce feeding Dory starts to look thin.
Nitrates on the way down.
 
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