I'm testing this right now with three fire reds all at 3.5" when I got them a month ago. I put one in a 75gallon with the stock of discus getting feed 4-5x daily. The other two are in a 29gallon with 3 other juvie discus feed 2-3 times. All get 50% daily water change. The reason I did this in the 29gal as I don't have tank space and didn't want to over feed and pollute the tank water by over feeding. So far the ones that get feed 4-5x grew out a lot faster and are much ticker in size right now at 4.5". The ones feed 2-3 times haven't grown much. Probably at 3.75" almost 4". Like the experts are saying there is no rush in growing them or reward and the end result will probably be the same. Personally I prefer quick growth and can afford to do daily WC. The way I look at it why not grow them out as much as you can when they are growing out the best. If I didn't I would resort to 1-2 feeding and do every other day WC. I will see how the end result of my Discus are once they are all fully grown. If they end up being the same size or not much of a difference in size i would feed less, which is less work to clean up.