I have never used a gel food before, but one of my fantails seems to have a swim bladder problem and gets floaty after eating the sinking pellets (new life spectrum), and these gel diets seem to be highly recommended. I just have a few questions. 1. Which do you use for 1 year old fantails (they are about 1/2 to 1 inch long including tail)? The Soilent Green has Crude Protein min. 45%, Crude Fat min. 6%, Crude Fat max. 8%, Crude Fiber max. 8%. and the super green has Crude Protein min. 35%, Crude Fat min. 8%, Crude Fiber max. 8%. So is more or less protein good for older fish? 2. How hard is it to feed? The directions are pretty clear that it sets up like jello, but does it start to dissolve in the water immediately or break apart and make a mess (I tried daily spinach and veggies but it made a huge mess - and the floaty one won't touch peas) 3. When feeding is it still soft enough that they can pull chunks off the cube to eat, or do I need to chop it into bite sized bits?