I scanned back to one of your previous posts and it looks like you were going to start off with Optimal #3 and then switch to Optimal #4. Here's some info on the starters from the Optimal website...
With a gradual sinking pellet, the entire water column can be targeted, enabling the weaker fish to get the appropriate nutrients they need and increasing survivability across the population.
If you are still using the Starter #? from Optimal your fish may be eating it below the surface. Switching to a floating JR or BG will likely bring them to the surface.
I am still using up the #3, and #4. The #4 sinks, and I see GB below the water zipping around after them. I just recently started to add some Jr to the mix.
