I think a major problem in this hobby is actually over-feeding. Quality over quantaty is good rule. I feed very lightly once every two or even three days. I hang nori once every other day. Stripes is right that variety id the spice of life, but so is moderation. Suppliment feedings with high-quality products instead of feeding more often. Feeding once a day is plenty, once evey-other day is just fine.
Some people are like slinkies...they serve no real purpose yet can still bring a smile to your face when you push them down the stairs!:p
Have a great day! Brian