Biolife Fish Breeding Box, Flexible Fish Isolation Box with Suction Cups, Aquarium Acclimation Hatchery Incubator for Baby Fishes Shrimp Clownfish and Guppy

Pros:It holds waterIt has small filter spongesCons:The hangers are flimsy and excessive flash will need trimmed off before they will fit in the slots; the hooks are too narrow for a framed tank.The lid isn't secured or flat, and the gaping hole that I assume is there for feeding is large enough that any jumpers can freely hop out.The suction cup plates hold the box in place by gravity alone, nothing else to secure the box using this option.The water outlet where the airstone sits is noisy. I mean NOISY. To cut down on the noise you can set the box lower in the water, but it will be precariously close to the water surface. close enough that the lid (unsecured, remember?) can float off.The breeder "cups" (4-1/4"x3"x2-1/4") seem like miniature torture chambers, I can't see how one fish could survive the stress of being kept in one for any amount of time.TL;DR- Buy something else

Completely useless for rimmed fish tanks is not secure with suction top sits on it and dose not snap on at all. And dosent stay even