Just checked on both tanks.

Main tank: Found (5) newbies and (1) of the two week olds.
Test tank: Found (5) newbies.

Fed veggie flakes to both tanks. What I do for the test tank is rub the flakes between my fingers to make a fine almost "powdery" mix. I then dip my hand under the water just over the stem and swirl it around. Trying to centrally locate as much as possible. Seems to be working out ok so far. Continuing to monitor.

Haven't had much luck with the zucchini of late. They are real small and wind up floating back to the top after only one day. They must not be in season at the moment I recon.