Feeding fry in any kind of tank can be a challenge. Whether a community tank, species only, or even a small segregation tank, getting food directly to the fry can take some effort. Such foods as baby brine shrimp, crushed flakes, and infusoria are great options. However, since these foods can be so tiny for fry intake, any little bit of water movement can quickly carry them away from the fry. As a result and like regular fish food, they can easily foul a tank if enough is not eaten. Unless you’re using a breeder box in which the fry are confined to a really small space and tank current is reduced, you need to get creative. Either that, or you need to simply power off the filtration.
A little over a year ago I picked up a 30g rimless tank (called Symbolic) by Mr. Aqua. At that time, I had intended to make it a species-only shellie tank of ‘Lamprologus’ ocellatus “gold”. I got the tank set up, cycled it with some existing media, and was off to the races. But as the saying goes, “The best laid plans of mice and men often go awry,” which is exactly what happened. My plan didn’t pan out for a variety of reasons.